Tissues Flashcards
1
Q
Simple squamous epithelium
A
- Single row of flare cells
- located in lungs, inside heart and blood vessels
- allows for rapid diffusion (think oxygen)
2
Q
Simple cuboidal epithelium
A
- single row of cube shaped cells
- line tubules, kidneys, glands, and livers
- absorption and secretion
More resistance for movement, thicker substance than oxygen
3
Q
Simple columnar epithelium
A
- single row of tall narrow cells
- located from stomach to intestines
- Absorption and secretion
Contains microvilli to increase surface area. Goblet cells are located inside. Nuclei are in a row.
4
Q
Pseudostratified epithelium
A
- looks stratified but aren’t, cilia
- Located in respiratory passages
- Secretes mucus and propels dust particles away from lungs
Have basal cells
5
Q
Stratified Epithelia
A
- composed of more than one layer of cells and named for shape of surface cells
- Deepest cells sit on basement membrane
- Variations: Keratinized epithelium and nonkeratinized epithelium
6
Q
keratinized stratified squamous
A
•multilayered epithelium covered with layer of compact dead squamous cells packed with protein keratin
- forms epidermal layer of skin
- retards water loss and prevent penetration
7
Q
Nonkeratinized stratified squamous
A
- stratified squamous few if any keratinized cells
- found on tongue, oral mucosa, esophagus and vagina
- lacks surface layer of dead cells forming abrasion resistant, moist, slippery layer
8
Q
Transitional epithelium
A
- multilayered epithelium with rounded surface cells that flatten when the tissue is stretched
- located in the urniary tract (Kidney, bladder)
- stretches to allow filling of urinary tract
9
Q
Nervous tissue
A
- composed of neurons and glial cells (nuclei)
- located in the brain, spinal cord, ganglia, and peripheral nerves
- Function is sensory input, integration, muscle control and mental activity, sensing stimuli and transmitting signals
