cuboidul. mathematics. cuboidul

 
 mathematicscuboidul After aging at 873 K for 24 h, these nanoparticles are coarsened and exhibit a cuboidal shape with a size of 25 ~ 35 nm due to an increased lattice misfit (ε = 0

cuboidal: 1 adj shaped like a cube Synonyms: cube-shaped , cubelike , cubical , cubiform , cuboid cubic , three-dimensional having three dimensionsThe simple cuboidal epithelium is that epithelium composed of cells whose dimensions are more or less the same; that is, their width, height and length are very similar. By substituting the given values, we get, Volume = 12 × 7 × 5 = 420 cubic units Colloidal CsPbBr3 nanocrystals (NCs) have emerged as promising candidates for various opto-electronic applications, such as light-emitting diodes, photodetectors, and solar cells. areolar. Stratified Cuboidal Epithelium. It is roughly cubical in shape, and presents a prominence in its inferior (or plantar) surface, the tuberosity of the cuboid. Definition of cuboidal in the Definitions. The pseudostratified columnar epithelium is a type of epithelium consisting of a single layer of cells that gives the appearance of being multiple layers because the nuclei of the cells are present at different levels. Fețele unui cub au formă de pătrat și sunt congruente, iar aria oricărei fețe este egală cu. Cuboid is a solid shape in geometry. Exemple. Q1: Find the Volume of a Cuboidal Tank of length 1m, width 0. These cells are present on the surfaces of the body serving as a protective barrier. Cum construim un cuboid şi un cub. Since, 1 m3 = 1000 l. Step 1: Identify the length of the side and name it to be "s". b) un rand anterior cu celelalte cinci oase: navicularul, cuboidul si trei cuneiforme. Learn about the shape of cuboid, cuboid formulas of surface area and volumes along with the examples at BYJU’S. Fata inferioara (plantara) prezinta transversal o proeminenta rotunjita (tuberozitatea cuboidului) prevazuta cu 2 versanti. These protein connections hold the cells together to form a tightly connected layer that is avascular but innervated in nature. Step 2: Now click the button “Solve” to get the volume. [G. Simple columnar epithelial cells are some of the most prolific cells in the body, mainly because they can fulfill so many functions. Overview. This epithelium is histologically a simple epithelium even though in a crosssection, it might appear as a stratified epithelium. The epithelium in a continuous, thin and protective layer of cells that are densely packed with some intercellular matrix. stratified cuboidal 49. [1] Treatment may be. Step 2: Find the volume using the formula V = s 3. Lining the kidney tubules, the ovary, thyroid. Here, we report on the self-assembly of cubic NCs from an organic suspension into ordered cuboidal. noun. Alloy samples were prepared by suction-cast processing and then heat-treated at different temperatures of 673–1273 K. The cuboid bone sits on the lateral side of the foot, sandwiched between the calcaneus and the fourth and fifth metatarsals, articulating with the navicular and third cuneiform. Prezinta 6 fete. Endothelium and mesothelium form cellular membranes which have the same histologic structure as a. 27 is a cube number. In the cross section each tubule appears as a ring of cuboidal cells around a white space (the lumen of the tubule). transitional. The present work primarily investigated the formation of coherent cuboidal B2 nanoprecipitates in body-centered-cubic (BCC) Al 0. The cuboidal nanoclusters self-assemble into a quasi-simple cubic packing pattern with perfect face-to-face contact of neighboring. Having the approximate shape of a cube. The focus of this topic is on the epidermal and dermal layers of skin. (anatomy) The cuboid bone. Although both cubes and cuboids look the same in structure, they have a few different properties based on edge length, diagonals and faces. Stratified cuboidal epithelium. somatostatin d. So if we need to find the total surface area of a cuboid whose length is 8 cm, width is 7 cm, and height is 6 cm, using the above, we begin by substituting the values: Cuboidal Epithelia Cuboidal epithelial cells, shown in Figure 2, are cube-shaped with a single, central nucleus. cuboidal cells. Simple cuboidal epithelium forms tubular and spherical structures in the body. (2) Form lining of mouth and alimentary canal, protect these organs. A pseudostratified epithelium is a type of epithelium that, though comprising only a single layer of cells, has its cell nuclei positioned in a manner suggestive of stratified epithelia. They function as a covering for several organs providing protection against damage and other chemicals. Many patients with Cuboid syndrome significantly overpronate. Esophageal glands. Se dă un cuboid. The line segment which joins the opposite vertices internally or externally is known as the diagonal. If cells were too big, diffusion would take an. Simple Cuboidal Epithelium Definition. The surface area of a cuboid is the total space occupied by it. Mutual synonyms. Anatomy A tarsal bone on the outer side of the foot in. 3. A special case of a cuboid is a rectangular cuboid, with six rectangles as faces. (Note that an epithelium is named for the shape of cells in the outermost layer, on the epithelial surface. The cells of the cuboidal epithelium are arranged in rows and are connected to each other by tight junctions. Most kidney tubules are made of _____ epithelial tissue, which is specialized for absorption and secretion. Sunt trei oase de formă prismatic triunghiulară:To calculate the surface area of a cuboid ( SAC ), we use the following formula: small SAC = 2 (lw + wh + lh) ext {sq units} S AC = 2(lw + wh + lh) sq units. The bone provides a groove where the tendon of the peroneus longus muscle passes to reach its insertion in the first metatarsal and medial. The number of layers varies depending on the location of the epithelium. Function of Epithelial cells. Difference Between Cube and Cuboid. Mathematics. Epithelial cells are localised to three distinct areas of the body. Cuboidal cells also line the kidney tubules (small structures in the kidney that filter blood and produce urine). columnar: Having the shape of a column. protection against infection; secretion; absorption. An epithelium with cuboidal cells inside the apical layer and columnar cells with in deeper layer is called stratified cuboidal epithelium. . Primary follicle - 1 o oocyte surrounded by cuboidal or. The given dimensions for cuboid are: Volume [Math Processing Error] = 3000 c m 3. The DCT is lined with simple cuboidal cells that are shorter than those of the proximal convoluted tubule (PCT). Cuboidal epithelial cells, shown in Figure (PageIndex{2}), are cube-shaped with a single, central nucleus. ; Lining interior enclosed spaces, such as blood vessels, the. The interaction forces exerted between permanent magnets are used in many magneto-mechanical devices (magnetic bearings, couplings, etc. În ceea ce privește cuboidul, pe fețele acestuia apar câteva exerciții și probleme de înmulțire. In simple columnar epithelium, the nucleus of the tall column-like cells tends to be elongated and located in the basal end of the cells. -Simple cuboidal cells exist only as double-layered sheets. 13. Functions of the simple cuboidal epithelium. Here, we report an anisotropic cuboidal polyhydrido copper nanocluster, [Cu23(PhSe)16(Ph3P)8(H)6]·BF4, with a distorted cuboctahedral Cu13 core stabilized by two square protecting motifs and six. Abstract. In simple columnar epithelium, the nucleus of the tall column-like cells tends to be elongated and located in the basal end of the cells. Așa cum ne-am obișnuit deja, acestea nu lipsesc din orele de matematică indiferent de subiectul lecției. Noun. What is the surface area of a cell that measures 5 μm on each side? 150 μm^2. This epithelium is composed of cells which are roughly equal in height and breadth with spherical and. They are most commonly found in a single layer representing a simple epithelia in glandular tissues throughout the body where they prepare and secrete glandular material. The human body is composed of four basic types of tissues, epithelium being one of them. simple columnar epithelium c. simple cuboidal epithelium diagram. Surface Area of Cuboid. These cells have a centrally located nucleus and are specialized for secretion and absorption. a characteristic that distinguishes one from another or from the average. Desfășurata cuboidului. Simple Columnar Epithelium 4. Epithelia is a group of cells that are. The mammary glands are one of the distinguishing features found on mammals. They are mainly present in the lining of smaller salivary ducts, pancreatic ducts, gastric glands,etc. The cells are uninucleate with a single large nucleus. Stratified squamous; stratified columnar _____ epithelium is the most widespread epithelium in the body, whereas _____ epithelium is rare. 1. Epithelial tissue is composed of one or more layers of cells that cover the external & internal body surface. Cuboid is a three-dimensional shape that looks like a rectangular box in our everyday life. Volume of Cube = a³. This tissue may be classified histologically according. Surface area of cuboid is the total space occupied by all its surfaces and sides. Unele forme au proprietăți comune, iar altele sunt complet diferite. Recognize and understand the histological organization of the prostate gland and know which regions are prone to benign hypertrophy compared to the regions in which. The basal surface is the. In a cross-section of the organ, these cells appear like thin columns, differentiating them from flattened squamous cells and square-shaped cuboidal cells. From stage 8 to stage 10, the cuboidal-to-squamous cell transition (referred to here as cell flattening) results in an anterior epithelial layer in which the cells are remodeled to be highly flattened and spread out. Cuboid means "like a cube ", in the sense that by adjusting the lengths of the edges or the angles between faces, a cuboid can be transformed into a cube. Example 3: Calculate the volume of a cuboid whose size is 8cm × 12cm × 6cm. Epithelial tissue is composed of one or more layers of cells that cover the external & internal body surface. Its volume is, V = s 3. The stratified cuboidal epithelium is a type of epithelium that is composed of multiple layers of cube-shaped cells. Cube. 2. So if we need to find the total surface area of a cuboid whose length is 8 cm, width is 7 cm, and height is 6 cm, using the above, we begin by substituting the values:Cuboid Definition: Cuboid shaped objects surround us in our day-to-day life. Rarely seen in the body, this tissue protects and excretes. . , length, width and height. , 2012). These epithelia are composed of cells that are short prisms with a top, bottom, and six sides. All of the cube-shaped cells are directly linked to the basement membrane since the. Given, Cuboidal tank already has petrol till height 40 cm. Aceasta este tema pentru acasă după predarea lecției „Cuboidul”, dată copiilor pe Zoom. t. Which type of epithelial tissue is the least protective?The capacity of cuboidal tank = volume of cuboidal tank = l × b × h cubic units = 10 × 8 × 5 m 3 = 40 0 m 3. Colloidal CsPbBr 3 nanocrystals (NCs) have emerged as promising candidates for various opto-electronic applications, such as light-emitting diodes, photodetectors, and solar cells. These cells create cerebrospinal fluid. They safeguard several organs from damage and other poisons by acting as a coating. May have microvilli on the surface in some locations. L= Lumen. Cuboid. The cuboidal epithelium in the ovaries generates the. Stratified Cuboidal Epithelium. 5, 3 A cuboidal vessel is 10 m long and 8 m wide. For example, simple squamous epithelial tissue describes a single. How high must it be made to hold 380 cubic metres of a liquid? Solution: Given: Length and breadth of the cuboidal vessel are 10 m and 8 m respectively. To find: c m 3 of v m o r e petrol that tanks can contain. Columnar epithelium: The cells are tall and column-like. ⇒ V =135 m3. Simple cuboidal epithelium is highly vascular, meaning that it is rich in blood vessels. It is a selective barrier that protects tissues and is often involved in absorption or secretion. Protruding fragments of simple cuboidal epithelial tissue can be found in the medulla and cortex of the kidney. 2 : composed of nearly cubical elements cuboidal epithelium. The cuboidal water tank which is 6m long, 5m wide and 4. The simple cuboidal epithelium’s key tasks are secretion, absorption, and covering because of the form of the cells. Cuboid definition: . Objective Lens: 40X. 5 high-entropy alloy (HEA) and its microstructural evolution with temperature. Cuboidal cells also line the. Treating cuboid syndrome begins with rest, and reducing or eliminating activity that involves putting weight on the foot. Common functions for simple cuboidal cells are secretion, and or absorption. Stratified cuboidal epithelium has layers of cube-shaped cells. Volume of cuboidal box = Length x Width x Height. Types Of Epithelium. Each kidney consists of a cortex, medulla and calyces. But if both of them are used for absorption and secretion, what is the difference? Why would there be two different tissues that have the same function?A uniform distribution of cuboidal B2 particles could be obtained by properly adjusting M, thus the lattice misfit, in a manner similar to that in Ni-based superalloys. Pentru că elevii fac în clasa a III-a cubul, predarea lecției Cuboidul s-a realizat online foarte ușor. 6 Al 0. Alloy samples were prepared by suction-cast processing and then heat-treated at different temperatures of 673–1273 K. o cutie de carton/plastic. =192 cm 3. (4) It forms barrier to keep different body system separate. În cadrul acestei lecții veți învăța ce este un cuboid, care este diferența dintre cub și cuboid, care sunt elementele unui cuboid. e. found in outermost layer of epidermis. Cuboidal Epithelial Cell. Cells are typically measured in _____ which is one _____ of a meter. Lab 2 Epithelial tissue. By analytical calculation, 2D problems can be solved easily, when simple shaped magnets are used. Desfășurata cuboidului. (c) Simple cuboidal. It provides mechanical support and play the role of secretion and are called glandular. 5 Ti 5Zr 4 to. Cuboidal cells are one of the most prevalent cell types in the human body. Competențe specifice: 3. Simple columnar C. Find the length of the box. [1] Transitional epithelium is a type of tissue that changes shape in response to stretching. Simple Cuboidal This image shows the simple cuboidal epithelium of the kidney tubules. Several. In the above image, the left side is a cuboid where d is diagonal and on the right side is a cube with its diagonal marked as d. Function: Good for reabsorption and secretion Found kidney convoluted tubules collecting ducts ascending loop of Henle choroid plexus of brain surface of ovaries Which of these are characteristics of simple cuboidal epithelium?-Simple cuboidal epithelium is always found in regions that permit diffusion. They are most commonly found in a single layer representing a simple epithelia in glandular tissues throughout the body where they prepare and secrete glandular material. Alloy specimens were prepared by suction-cast processing and then heat-treated at different temperatures of 673–1273 K for 2 h, respectively. Cubic and cuboidal are semantically related. „Cuboid” înseamnă „de formă aproximativ cubică” [1], în sensul că, prin schimbarea lungimii laturilor sau/și a unghiurilor dintre laturi și fețe, un cuboid se poate transforma într-un cub. These conditions result in a box shape, like a shoebox, cereal box, or a textbook. With large, rounded, centrally located. cuboid翻譯:長方體,矩形體, 近似立方形的,立方體的, 骰骨的。了解更多。Study now. In simple columnar epithelium, the nucleus of the tall column-like cells tends to. The three dimensions of a cuboid are length, width, and height. For example, it has roles in protection, absorption, secretion, and sensation. A basement membrane is always present, which separates the epithelial tissue from the other tissues. Their function is to filter blood and produce urine. Owing to the shape of the cells, the primary functions of the simple cuboidal epithelium are secretion, absorption, and covering. Each nucleus has at least two nucleoli. As they elongate, the apical portion comes to lie deeper to other, more anteriorly positioned, lens cells. Browse Getty Images' premium collection of high-quality, authentic Cuboidal Epithelium stock photos, royalty-free images, and pictures. The cells in the outermost layer of the stratified cuboidal epithelium, which is made up of multiple layers, are cube-shaped. Simple cuboidal epithelium is a form of simple epithelium made up of cube-shaped cells with rounds and a nucleus that is more or less in the centre. Therefore, the capacity of the cuboidal tank is 400m 3. v. This multi-principal-element alloy is developed out of a cluster formula. Noun. Click here:point_up_2:to get an answer to your question :writing_hand:a cuboidal vessel in 10 m long and 8 m. Acest articol se referă la un corp geometric. Ans: We know, the volume of a cuboid is given as: [Math Processing Error] v o l u m e = l e n g t h × b r e a d t h × h e i g h t. kybos, cube, + eidos, resemblance]cubical: 1 adj shaped like a cube Synonyms: cube-shaped , cubelike , cubiform , cuboid , cuboidal cubic , three-dimensional having three dimensionsAldosterone stimulates Na + reabsorption by the kidney, which also results in water retention and increased blood pressure. They are found throughout the body's organ system, including the digestive tract and the female reproductive system. The three-dimensional structure of the SPs. Stratified cuboidal epithelium. simple cuboidal epithelium I. The cuboid is one of the seven bones which make up the tarsus of the Ankle and Foot and it is one of the five bones of the midfoot. cuboidal synonyms, cuboidal pronunciation, cuboidal translation, English dictionary definition of cuboidal. Location. g. After aging at 873 K for 24 h, these nanoparticles are coarsened and exhibit a cuboidal shape with a size of 25 ~ 35 nm due to an increased lattice misfit (ε = 0. This is simple cuboidal epithelium of kidney tubules in longitudinal section. The three main shapes of epithelial cell are columnar, squamous, and cuboidal. Simple cuboidal Simple cuboidal epithelium Epithelium simplex cuboideum 1/2. Are șase fețe: superioară, posterioară, inferioară, anterioară, medială, laterală. Also, it is the cuboidal B2 nanoprecipitation that renders the current alloy with yield strength of σYS = 238 ~ 258 MPa at 973 K. Step 3: Finally, the volume of a cuboid will be displayed in the output field. In humans, simple columnar epithelium lines most organs of the digestive. Simple cuboidal epithelium locations include the tiny tubules of the. These cells, termed cuboidal. These large and polyhedral (six surfaces) cells make up 80% of the total cells of the liver. Therefore, the volume of. The present work reports a cuboidal B2-coherently-enhanced body-centered-cubic (BCC) alloy Al 0. It is. An epithelium with cuboidal cells inside the apical layer and columnar cells with in deeper layer is called stratified cuboidal epithelium. Type of Cuboidal Epithelium. LOCATION: found in PCT and DCT of nephrons of kidney. Both cuboidal and columnar structures can be seen in the lower, deeper levels. A Cuboidal Cell is a cell a cube-like shape where its width is about equal to its height. A cuboid has 6 rectangular faces. Cuboid syndrome is an easily misdiagnosed source of lateral midfoot pain, and is believed to arise from a subtle disruption of the arthrokinematics or structural congruity of the calcaneocuboid(CC) joint, which in turn irritates the joint capsule, ligaments, and fibularis (peroneus) longus tendon. Transitional epithelial cells are epithelial cells specialized to change shape if they are stretched laterally. (class slide) notice that the cytoplasm of the simple cuboidal epithelial cells is stained pink and the nucleus is stained purple. 5 m. cuboidal: , cuboidal ( kyū'boyd, kū-boy'dăl ), [TA] 1. The difference between squamous and cuboidal/columnar epithelium is clear. (3) Help in absorption of water and nutrients. The stomach and intestines are lined by simple columnar epithelium. Squamous Cell of the Skin. It provides mechanical support. Simple cuboidal. The four major classes of simple epithelium are: 1) simple squamous; 2) simple cuboidal; 3) simple columnar; and 4) pseudostratified. Chapter 2 - Epithelium. 1. Find the number of cuboidal boxes measuring 2 cm by 3 cm by 10 cm which can be stored in a carton whose dimensions are 40 cm, 36 cm, and 24 cm. Este vorba de șase sarcini de lucru care presupun: – rezolvare de probleme cu una, două sau trei operații. The main pancreatic duct received secretion from interlobular ducts and penetrates through the wall of the duodenum. The cube has 6 faces, 12 edges, and 8 vertices where each vertex meets three faces and three edges. One layer of cells has approximately the same height as its width. The tank can hold 135000 litres of water. Simple cuboidal cells are also characterized by a single, large, round (spherical) nucleus located near the center of each cell. The formula for the volume of the cuboid can be derived from the concept explained on rectangular sheets. 15Co also, G t,111 is the largest in the range, and thus the cuboidal-to-octahedral shape change at r ≈ 30 nm cannot be explained. Orientare 1. They are also found in the walls of tubules and in the ducts. Surface cells are cuboidal—elongated basal layers. Upon increasing the NC concentration or by addition of a nonsolvent, the formation of the SPs occurs homogeneously in the suspension, as monitored by in situ X-ray scattering. It has 6 faces, 12 edges of same length and 8 vertices. 1. Lined by cuboidal cells and usually surrounded by smooth muscle. It is made up of one or more layers of cells closely packed together. Although a single organ, the thyroid gland of most species has distinct, anatomically separate lobes (dogs, cats, and horses). A tissue is a group of cells, in close proximity, organized to perform one or more specific functions. CUBUL- ÎMPĂRȚIREA LA 10,100,1000 Deschide caseta. Simple Cuboidal Simple cuboidal epithelium consists of a single layer cells that are as tall as they are wide. A cuboid is a six-faced three-dimensional shape in which each face is in the shape of a rectangle. In this review, an update on diagnosis and management of cuboid fractures is presented. Desenează un cub și un paralelipiped dreptunghic. These elongated lens cells are known as lens ‘fibres’ ( Fig. Epithelial tissue may be classified on the. Fitting the 12 peaks with Gaussian functions (solid lines) gives an average fwhm of 9. The simple cuboidal epithelium also lines the inner layer of the retina. For example, 3 × 3 ×3 = 27. 4 As quantum wires as well as for cuboidal and pyramidal quantum dots of the same material. Pancreatic alpha cells secrete a. A. 5m and height 2m. Glandular epithelium represents the inner layer of skin and secrets sweat, oil, mucus, etc. 14 Conversion of Angiotensin I to Angiotensin II The enzyme renin converts the pro-enzyme angiotensin I; the lung-derived enzyme ACE converts angiotensin I into active angiotensin II. [1] . 2. Function. V = 8 × 12 × 6. It also occurs in embryo . There are multiple examples of cube and cuboid in our real-life. Simple cuboidal epithelium: This type of epithelium is typically found in glandular (secreting) tissue and kidney tubules. Volume of Cuboid. Tema: Corpuri geometrice: sferă cub, cuboid,con, cilindru Profesor: Dediu NataliaManual:cuboidal epithelia are observed in the lining of the kidney tubules and in the ducts of glands. cuboidal: Resembling a cube. Height (h) = 25 cm. o cutie cu chibrituri. Articulația transversală a tarsului (Articulatio tarsi transversa) numită și articulația mediotarsiană sau articulația lui Chopart, este o articulație dispusă transversal, care unește patru oase ale tarsului: talusul cu navicularul și calcaneul cu cuboidul. solid . Epithelial cells safeguard. If you look at a healthy section of large intestine, the nuclei of the epithelium clearly line up, and it's not hard to see that the structure is a simple epithelium. 동물의 체표나 체강 및 관상 장기의 내부 표면을 덮는 조직, 그리고 내분비샘 과 외분비샘 등 샘을 이루는 조직이 상피 조직에 해당한다. Solution: Given details are, Dimensions of cuboidal boxes is = 2cm × 3cm × 10 cm. We come across a cuboid almost every day in our lives. Several examples of their locations are discussed below. Simple cuboidal epithelium is a type of epithelium that consists of a single layer of cuboidal (cube-like) cells which have large, spherical and central nuclei. Cuboid has length, breadth, and height and is the most commonly seen object around us in various everyday objects. squamous cells. Nearby Words: cube, cubical, cuboid. This layer also contains melanocytes. The cells of the stratified cuboidal. It is a single layer thick and made of cube-shaped cells. If cells were too big, diffusion would take an extremely long time, and a cell could die from starvation or poison itself with its. Height = 30 in. RS Agarwal. At the bottom of the slide, there is a kidney. Simple Epithelial Tissue Definition: The Basics. = 700 cubic cm. Like cuboidal epithelium, the cells in the columnar epithelium are also modified to suit the function and structure of the organ better. Cuboidul. The lower photo shows a longitudinal section of kidney tubules. Example 4: Given that the dimension of a cuboidal shape beam is 10m in length, 60 cm in width and 25 cm in thickness. When a number is multiplied by itself three times, then the resulting number is called cube number. It is a good idea to drink several glasses of water a day. Hydrosalpinx: Dilated fallopian tube lumen, lined by ciliated epithelium, attenuated or rare plicae, well developed smooth muscle in the wall . A simple epithelium is an epithelial tissue that is composed of a single layer of epithelial cells. Așa cum ne-am obișnuit deja, acestea nu lipsesc din. They can contain between two and four nuclei, which are large and spherical, occupying the centre of the cells. cuboidal B2 nanoparticles are coherently-precipitated in the BCC matrix of as-cast Al 2(Ni,Co,Fe,Cr) 14 alloys [25–30]. Dimensions of carton is = 40cm × 36cm × 24cm. 1. 4. Squamous epithelium. Position as well as role of the epithelial tissue influence the apical surface modification. The cuboidal epithelial cells help in absorption, secretion, and excretion. Pentru a fi realizată tema pentru acasă de către toți elevii clasei, m-am asigurat pe Zoom că au acces la materialele predate, pe care le. It is composed of a single thin layer of flattened cells with irregular boundaries. Thyroid follicular cells form a simple cuboidal epithelium and are arranged in spherical thyroid follicles surrounding a fluid filled space known as the colloid. It is also a prism because it has the same cross-section along a length. In simple columnar epithelium, the nucleus of the tall column-like cells tends to be elongated and located in the basal end of the cells. Stratified Cuboidal Epithelium. The epithelium is a type of tissue that covers many different surfaces on the inside and the outside of your body.