Flashcards in Epithelial Tissue Deck (12):
Which 3 places is stereocilia found?
epididymis, inner ear, and ductus deferens
State the difference between endothelium and mesothelium
Endothelium lines blood vessels; mesothelium lines the body cavities (pleura, pericardium, and peritoneum)
What is the main difference between serosa and mucosa?
Serosa attaches to the basement membrane so is underneath the epithelial cells; mucosa lies on the topmost layer
State 3 differences between microvilli and stereocilia
1. microvilli has a villin cap but stereocilia doesn't
2. stereocilia are much longer than microvilli
3. microvilli connects to the plasma membrane via myosin 1; stereocilia connects via ezrin
4. microvilli found in most epithelial cells; stereocilia found in few locations
How do stereocilia develop?
1. LATERAL addition of actin filaments
2. elongation of actin filaments
State 6 locations of motile cilia.
1. sperm cells as flagella
4. bronchial tree
6. brain ependyma (forms lining of brain and spinal cord canal)
What are the 2 main functions of motile cilia?
1. transport cell secretions
2. sperm propulsion
Which type of cilia on average is the shortest?
True or false: Primary cilia is motile
primary cilia is immotile
How are the core microtubules arranged in motile versus primary cilia?
Motile cilia --> 9 + 2 arrangement
Primary cilia --> 9 + 0 arrangement
State the function of a basal body.
anchor cilia to apical cell cytoplasm