Physiology 2 Flashcards
Avascular Cellular Sheets Which Cover Or Line body parts are known as
epithelum
epithelium forms specialized receptor of sensory organs, give 3 examples
- rods of cones of the retina 2. olfactory cells 3. tast buds (see, smell and taste)
name the type and location of the protective epithelium
tpe: stratified squamous location: 1. oral cavity, pharynx, esophagus, anal canal
name the type and location of the secretory epithelium
tpe: simple columnar, orangized in pits location: stomach
name the type and location of the absorptive epithelium
tpe: columar epithial cells, microvilli on apical surface location: small intestine
name the type and location of the absorptive/ protective epithelium
tpe: columar with striated border, sloughed and replaced every 6 days location: large intestine
quantify the amount of fluid secreted into feces
100-200 mL
98% of fluid is reabsorbed by (which one is predominant)
small intestine (predominant) and colon
transport across tight junctions is called
paracellular transport
seals cells together in an epithelial sheet to prevent leakage of molecules between them, name the junctional complex
tight junction
joins actin bundle in one ccell to a similar bundle in a neighboring cell, name the junctional complex
adherens junction
joins the intermediate filaments in one cell to the neighboring cell, name the junctional complex
desmosome
allows the passage of small water soluble ions and molecules, name the junctional complex
gap junction
anchors intermediate filaments in a cell to the basal lamina, name the juncttional complex
hemidesmosome
name the two active pumps in the transcellular pathway
Na/K, H/K pumps
electrogenic sodium absorption, name the transcellular pathway
Na channel
name the two trancellular pathways responsible for Cl secretion and only Cl-
Cl channel, Na K Cl cotransporter
tight junctions allow the movement of
water and oppositely charged ions only
bicarb secretion occurs in the ________and a decreased in bicarb secretion results in
proximal duodenum, duodenal ulcer
decreased nutrient absorption results in a pathological state known as
infectious or other secreotry diarrhea
excessive Cl and HCO3 secretion results in
infectious or other secreotry diarrhea
decreased Na absorption leads to
secretory diarrhea
decreased NaCl absorption leads to
infectious/ secretory diarrhea
which occurs first in intestinal absorption. Absorption of water or solute
soluuuuute (SALUTE to solute)
