tissues Flashcards
the study of tissues
histology
unspecialized or undifferentiated cells
stem cells
it may differentiate to become specialized cell
stem cells
embryos stem cell which differentiate into embryonic tissue
embryonic stem cell
repair old or damaged tissue and generate new cell (blood cells)
adult stem cell
four primary tissue types in the human nody
epithelial
muscle
nervous
connective
group of cells with similar structure and function, plus the extracellular substance surrounding them.
tissues
tissues is consist of
cells and extracellular matrix
a highly cellular tissue, composed mostly of cell with little matrix
epithelial tissue
non cellular layer that attaches epithelial tissue to deeper tissue
basement membrane
epithelial tissue is classified:
shape of the cells and the number of layers
cells are flat or scalelike
squamous
cells are cube shape
cuboidal
cells are taller than wide
columnar
one cell layer thick
simple
more than one layer of cell
stratified
appears to be falsely stratified
pseudostratified columnar epithelium
line some portion of the respiratory passages to protect lungs in mucuos sheet and moving away particles
pseudostratified columnar epithelium
all cells are located at the basement membrane, which may adhere to connective tissue, muscle, or other epithelial tissue
simple
nuclei are at different level at this tissue
pseudostratified columnar
composed of thin, flat cells that lie on the basement membrane
simple squamous
lines the air sacs of lungs (gas exchange)
simple squamous
lines the blood vessels, where it is called ___
simple squamous; endothelium