Tissue Test Flashcards
Three types of epithelial
Covering
Lining
Glandular
General features of ET
Closely packed cells Layers Many cell junctions Have definite top and bottom Avascular NO BLOOD VESSELS Attached to basement membrane Nerve supply Hi mitotic rate Derived from all 3 germ layers
Simple squamous
Description: one thin flat layer
Location: lungs,kidney
Function: osmosis, filtration, diffusion
Simple cubodial
Description: one layer of cubes
Location: ovaries,kidneys,eyes,glands
Functions: secretion, absorption
Simple columnar
D: layers or columns
Location: digestive tract
Function: secretion of mucus
Ciliated simple columnar
D: 1 layer of columns
L: upper respiratory tract and uterus
Function: moving fluids or particles
Stratisfied squamous
L: skin, vagina, mouth, anywhere with friction
F: protect
Stratisfied cubodial
Multiple layers with top cube
Location: ducts of larger glands
Function: protect and secrete
Stratified columnar
Columns
Location: male urethra, ducts of some glands
Function: protect
Transitional
Several layers varying shape
Location: bladder
Function: stretching
Pseudostratisfied
Location: ear tubes, large ducts o large glands
Function: secrete and move mucus
Endothelium. Where.
Simple squamous that lines the ❤️ and blood vessels
Mesothelium. Where.
Simple squamous that lines body cavities
Exocrine glands vs. endocrine glands. Example of each.
exocrine (have a duct) SWEAT
endocrine (no duct, right into the stream o blood) HORMONES
3 Types of exocrine
Apocrine- pinch
Merocrine- exocytosis
Holocrine- die
General features of connective tissue
Few cells Large matrix All from mesoderm Do not appear on free surface of body Varying degrees of vascularity Nerves
Where do connective tissues come from
Mesoderm
-cyte and -blast
Cyte is old.
Blast is immature and makes fibers