Jan 12, 2016 ... In epithelial tissues, cells constantly generate and transmit forces between each other. Forces ... cytoskeleton regulate tissue shape and structure and also provide signals that influence cells' decisions to divide, die, or differ-
The word tissue derives from the Old French word meaning “to weave,” reflecting the fact that the different tissues are woven together to form the “fabric” of the human body. The four basic types of tissue are epithelial tissue, connective tissue , m
Organisational Structure and Elliot Jaques’ Stratified Systems Theory Research Report 3397-508-6 presented to the Graduate School of Business Leadership
Epithelium: The lightweight, customizable epithelial tissue simulator. Thesis. Presented in Partial Fulfillment of the Requirements for the Degree. Master of ... Epithelial tissue performs many important functions in animals, such as preventing conta
All living things are made of cells. One kind of cell ... tissue. Our bodies have many different kinds of cells because we have many different kinds of tissue. Tissues are large groups of cells all doing the same job. The different kinds of tissues a
sectioned into two equal parts such that there is a left and right half then this is known as a median section. Label the illustrations and color in the appropriate planes. Chapter One I mKAPeLAN(I·-Ical. 3. Introduction c. _ a. _. Answer Key: a. Fro
Tissues: The Living Fabric To optimize functions, body cells are organized into tissues Four basic tissue types exist in humans – Epithelial tissue
Epithelial Tissue THE FACTS . Overall Structure of the Tissue • Epithelial cells are usually close together • have little or no “matrix”
Feb 10, 2016 ... tissues and biomedical devices, representing a potential support for surgical practice and prosthesis design. The development of ... histological analysis of urethral tissues, the mechanical characterization of the response of tissue
Mar 9, 2011 ... With the advent of technology for developing staining techniques several reviews have ... Background: The potential problems related to the use of formalin in histopathology, such as health hazards, deterioration of ..... Bancroft JD,
strated also a very much more important fact, the possibility of growing tissues outside the body. At this time ... Burrows (7) began to acquire and improve the technique of tissue cultivation by using plasma from the blood ... nature, these tissues
first group have now addressed this problem from fun- ... The standout epithelial tissues lacking p63 in pro- genitor layers are the small and large intestine. Although it is clear that p63 expression is not limited to “stem” cells of the epithelial
CELLS & TISSUES. Lesson Aim. To explain the human body at a microscopic level, including the structure and function of cells, tissues and membranes. THE CELL ... This membrane is a semi-permeable membrane which means it allows certain things ... conn
ZOO 117 1.0 Histology Dr. Dinithi Peiris Dept. of Zoology
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Stratified Epithelia
Stratified Epithelial Tissues
• Contain two or more layers of cells • Regenerate from below • Major role is protection • Are named according to the shape of cells at apical layer
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Stratified Squamous Epithelium
Stratified Squamous Epithelium Specific types
• Many layers of cells: Squamous in shape • Deeper cell layers appear cuboidal or columnar • Thickest epithelial tissue • What is the primary function of this epithelium? • Is this epithelium is a portion of mucus membrane? Where does mucus come from?
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Stratified Squamous Epithelium
• Keratinized – contain the protein keratin • Surface cells are dead and full of keratin • Non-keratinized – forms moist lining of body openings
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Stratified Squamous Epithelium
Function – Protects underlying tissues in areas subject to abrasion Location • Keratinized – forms epidermis • Non-keratinized – forms lining of esophagus, mouth, and vagina
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Stratified Cuboidal Epithelium
Stratified Cuboidal Epithelium
Description – Generally two layers of cubedshaped cells Function – Protection Location • Forms largest duct of sweating glands • Forms ducts of mammary and salivary glands
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Stratified Columnar Epithelium
Stratified Columnar Epithelium
Description – Several layers. Basal cells usually cuboidal and superficial cells are elongated. Function – Protection and secretion Location • Rear tissue types • Found in male urethra and large ducts of some glands 11
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Transitional Epithelium
Transitional Epithelium
Description – Basal cells usually cuboidal or columnar and superficial cells usually domeshaped or squamous. Multi layered. Function – Stretches and distention Location • Uterus, Urinary bladder and part of Urethra
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Given the previous examples (consider the morphology only)
What kind of tissue does this represent? Simple squamous epithelial tissue
Can you name? First, the tissue type Second, where in the body the tissue is found
Where in the body would you find this tissue? lungs
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What kind of tissue does this represent? Simple squamous epithelial tissue (superior view)
What kind of tissue does this represent? Simple cuboidal epithelial tissue
Where in the body would you find this tissue? Kidneys (tubules) The lining of the kidney glomerulus (sing.)/glomeruli (pl.) is simple squamous epithelial tissue
What kind of tissue does this represent? Simple columnar epithelial tissue
What kind of tissue does this represent? Pseudostratified (ciliated) columnar epithelial tissue false layered ; it looks like more than one layer, but it is not
Where in the body would you find this tissue? small intestine
Where in the body would you find this tissue? trachea lining
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What kind of tissue does this represent? Stratified squamous epithelial tissue
Where in the body would you find this tissue? mouth lining
What kind of tissue does this represent? Stratified columnar epithelial tissue
Where in the body would you find this tissue? male reproductive tract
What kind of tissue does this represent? Stratified cuboidal epithelial tissue
Where in the body would you find this tissue? salivary glands, sweat glands
What kind of tissue does this represent? Transitional epithelial tissue
Where in the body would you find this tissue? empty bladder
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What kind of tissue does this represent? Transitional epithelial tissue
Where in the body would you find this tissue? distended (full) bladder
Example
Location
Shape (form)
Function
Transitional epithelium
Bladder
Layer with no specific shape, Cells can stretch
Allow bladder to stretch as it fills
Simple squamous
Lungs, blood vessels
Flat and thin layer
Increase flow and absorption rate through tubes
Stratified squamous
Skin, esophagus, mouth cervix
Several layers of thin flat cells
Provide protection from abrasions
Simple columnar
Digestive tract
One cell layer of rectangular cells mixed with goblet (mucous – producing) cells
