epithelial tissue (epithelium). epithelial tissue (epithelium) lining, covering and glandular...
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EPITHELIAL TISSUE (EPITHELIUM)
Epithelial tissue (Epithelium) Lining, covering and glandular tissue of
the body
Protection Absorption Filtration Secretion
Epithelial tissue (Epithelium) Examples:
Skin protects against bacteria/chemicals Lining of the respiratory tract-cilia to sweep
mucus Kidney-epithelium absorbs and filters Secretion-glands
Epithelial tissue (Epithelium)
Epithelial tissue (Epithelium)
Simple Squamous
Single layer of thin squamous cells
Forms membranes for filtration/exchange
Air sacs of lungs Walls of
capillaries
Simple Squamous
Simple Cuboidal
Single layer of cuboidal cells
Glands/Ducts Salivary Glands Ducts in Pancreas
Kidney tubules Surface of
ovaries
Simple Cuboidal
Simple Columnar
Single layer of columnar (tall) cells
Line digestive tract
Goblet cells: produce mucus
Simple Columnar
Pseudostratified (ciliated) columnar
Some cells are shorter than others
Absorption and secretion
Ciliated variety lines the respiratory tract
Goblet cells make mucus
Cilia move mucus
Pseudostratified (ciliated) columnar
Stratified squamous
Several layers of cells
At the top squamous and close to basement membrane (bottom) are cuboidal or columnar
Can stand friction: Esophagus Mouth skin
Stratified squamous
Transitional (stratified)
Cells at base are cuboidal or columnar, free surface varies
Tissue can stretch
Lines the: Urinary bladder Ureters Part of urethra
Transitional (stratified)
Extracellular matrix
Produced by connective tissue cells Secreted to exterior
Ground substance, proteins and large polysaccharides
Matrix fibers
Gel like, to firm, to rock hard
Extracellular matrix
Extracellular matrix
Types of Connective Tissue
Bone Cartilage Dense Connective Tissue Loose Connective Tissue Blood
Connective Tissue - Presentation Research your assigned connective
tissue
Description and properties of the tissue Structure and functions Where in the body is this tissue found?
(examples)
You can write/draw on a blank slide on the board
Presentation should be at least 2-5min