Histology Flashcards
scientific study of tissues
Histology
a group of cells performing the same function
tissues
What are the four types of tissues?
- epithelial
- connective
- muscle
- nervous
What is the function of epithelial tissue?
protection, absorption, secretion, and filtration
What are the four characteristics of epithelial tissue?
- cellularity
- polarity
- avascular
- regenerative
What is the purpose of mucus?
lubrication
What is the order of naming of epithelial tissue?
number of layers —> cell shape
When cell repair is fast, it means the cells are highly —–?
mitotic
What is the difference between simple and stratified?
- Simple has only one layer of cells
- Stratified has 2 or more
What are the three cell shapes in epithelial tissue?
- squamous
- cuboidal
- columnar
What is another term for epithelial tissue?
Epithelium
cell & nucleus
simple squamous epithelium
flat cell with disc-shaped nuclei
two types and their differences?
simple squamous epithelium
- endothelium, inner covering of hollow organs (lungs, stomach)
- mesothelium, middle covering (pleural, pericardial, and peritoneal)
Function?
simple squamous epithelium
passage and lubricant secretion
Locations
simple squamous epithelium
- kidney (renal corpuscle)
- lungs (alveoli)
- heart, blood, & lymphatic vessel linings
- ventral cavity lining
Function
simple cuboidal epithelium
- secretion
- absorption
Cell & nucleus?
simple cuboidal epithelium
cube-like cells, spherical nuclei
cell & nucleus
simple columnar epithelium
column/rectangular cells, elongated/oval nuclei
Location
simple cuboidal epithelium
- kidney tubules
- ovary surface
function
simple columnar epithelium
- absorption
- secretion
location
simple columnar epithelium
- ciliated (small bronchii, uterus, uterine tube)
- non-ciliated (gall bladder, digestive track)
pseudostratified columnar epithelium
pseudostratified columnar epithelium
cells originate from where?
pseudostratified columnar epithelium
the basement membrane
