Test 1 - lab 2 - Histology I Flashcards
tissue
group of cells that work together to perform specific function(s)
describe striated or skeletal muscle
- long, cylindrical fibers in bundles
- multinucleated
- alternating light & dark protein bands (striations)
- VOLUNTARY
what are the two cell types in the nervous tissue
axons: long processes
dendrites: short processes
what are the 3 types of muscle?
- skeletal
- cardiac
- smooth
body surfaces, lines cavities, glands
epithelium
- small cells, closely packed
- apical or luminal surface
- avascular (no blood supply)
- basement membrane
epithelium
connects and supports body parts, fills in spaces
connective tissue
study of tissues
histology
connective tissue
connects and supports body parts, fills in spaces
excitable communication cells
nervous
nervous
excitable communication cells
what are the characteristics of nervous tissue
- excitable
- able to carry electric potentials
cytology
study of cells
what do non-ciliated simple columnar epithelium line?
digestive tract from stomach to colon
describe the smooth muscle function
- long, smooth fibers
- no striations
- large, central nucleus
- long, sustained contractions
- moves substances thru the stomach, intestines & uterus
- INVOLUNTARY muscle movement
what do ciliated simple columnar epithelium line?
bronchioles & uterine tubes
histology
study of tissues
excitable, contractible elements
muscle
what are the characteristics of epithelium
- small cells, closely packed
- apical or luminal surface
- avascular (no blood supply)
- basement membrane
muscle
excitable, contractible elements
what are the two types of simple columnar epithelium
ciliated or non-ciliated
epithelium
body surfaces, lines cavities, glands
what are the functions of stratified squamous epithelium
- multiple cell layers
- protects from abrasion & friction
- keratinized and non-keratinized
- apical cells: squamous shape
- basal cells: cuboidal shape (continually replace dead cells)
what are the characteristics of muscle?
- contractile elements (may shorten or contract)
- excitable (produce electric impulse)
study of cells
cytology
what are the functions of simple cuboidal epithelium
- find in ducts & glands
- absorbs fluid across apical surface
- secretes molecules in ovary, kidney & endocrine glands
- has unique cell called Goblet cell (secrete mucus)
group of cells that work together to perform specific function(s)
tissue
describe the function of cardiac muscle
- form middle layer of heart wall
- short fibers that often branch (Y)
- weak striations
- one-two nuclei
- lots of mitochondria
- INVOLUNTARY
