Ch. 5 Tissues Flashcards
1
Q
similar cells with a common function
A
tissue
2
Q
study of tissues
A
histology
3
Q
close space between cells, located among cells that form linings
A
tight junctions
4
Q
form “spot welds” between cells, located among outer skin cells
A
desmosomes
5
Q
tubular channels between cells, located in cardiac muscle cells
A
gap junctions
6
Q
General characteristics of Epithelial Tissue
A
- covers organs and the body
- line body cavities
- line hollow organs
- have a free surface
- have a basement membrane
- avascular
- cells readily divide
- cells tightly packed
- often have desmosomes
- function in protection, secretion, absorption and excretion
- classified according to cell shape and number of cell layers
7
Q
Simple
A
1 layer
8
Q
stratified
A
many layers
9
Q
squamous
A
flat (tile shaped)
10
Q
cuboidal
A
cube shaped
11
Q
columnar
A
column shape
12
Q
pseudo
A
false
13
Q
Simple Squamous characteristics
A
- single layer of flat cells
- substances pass easily through
- line air sacs
- line blood vessels
- line lymphatic blood vessels
14
Q
Simple cuboidal characteristics
A
- single layer of cube shaped cells
- line kidney tubules
- cover ovaries
- line ducts of some glands
15
Q
Simple Columnar characteristics
A
- single layer of elongated cells
- nuclei usually near basement
- membrane at same level
- sometimes posses cilia sometimes microvilli
- often have goblet cells
- line uterus, stomach, intestines
