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Tissues - Coggle Diagram
Tissues
Epithelial
Types
1- surface epithelial( covering body surface, lining body cavities))
Classifications:
First name describe number of layers
2- stratified( more than one layer)
Stratified cuboidal
Stratified columnar
Stratified squamous
Contain 2 or more layers of cells squamous in shape(deeper layers of cell appear cuboidal or columnar) -named according to the shape of cells at apical
1-simple ( one layer only)
Simple cuboidal
Single layer of cube-like cells with large spherical central nuclei
Function:
Sectretion and absorption
Location:
Kidney tubule
Secretory portions of small glands, salivary glands, pancrease
Ovary surface
Simple columnar
Function:
Absorption, secretion of mucus, enzymes,and other substances
Propels mucus or reproductive cells by ciliary action (ciliated type )
Location:
Ciliated: lines small bronchi, uterine tubes (fallopian tube), and uterus
Non-ciliated: lines digestive tract (from stomach to anal canal), gallbladder, ducts of some glands “note: that it contain microvilli (hair-like structure that does not move) which facilitate the absorption of ingested food and water molecules”
Single layer of column-shaped(rectangular)cells with oval nuclei
Some bear cilia(hair-like structure that moves)at their apical surface(upper surface)
May contain goblet cells (a special type of glands that secretes mucus)
Simple squamous
Types:
Endothelium: thin and flattened lining of some organs (heart,blood,lymphatic vessels)
Mesotheliom: lines ventral body cavities and covers visceral organs(serosae)
Functions:
1-passage of materials by passive diffusion(gas exchange in alveoli)and filtration(kidney capsule)
2- secretes lubricating substance in serosae
Single layer of flat cells with disc-shaped nuclei
Location:
1-alveoli of lungs and kidney corpuscle
2-lining of heart, blood and lymphatic vessels
3-lining of ventral body cavity and covering organs (serosae)
Last name describe the shape
Special types:
2- glandular epithelial ( cells that form exocrine and endocrine)