What is the function of mucus in the stomach?
A. Partially breaks down lipids
B. Allows vitamin B12 to be absorbed
C. Destroys bacteria
D. Protects the stomach walls
Answer: D
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When do the accessory respiratory muscles become active?
A. The muscles of expiration are the abdominal and diaphragm muscles. B. The muscles of expiration are the abdominal and internal intercostals muscles. C. The muscles of expiration are the external and internal intercostals muscles. D. Exhalation is a passive process and does not require the action of any muscles
Which is NOT a transport mechanism typically seen in renal tubular epithelial cells?
A. cotransport proteins in the luminal membrane of the proximal tubule that move Na+ and glucose from the proximal tubule into epithelial cells B. transport proteins that move glucose by facilitated diffusion from inside of proximal tubule cells into the renal interstitial fluid C. ion channels that allow Na+ to move by diffusion from the lumen of the proximal tubule into epithelial cells D. Na+-K+ ATPase pumps in the luminal membrane of proximal tubule epithelial cells that move Na+ from inside the cell into the tubule and K+ from the tubule lumen into the cell E. countertransport proteins that move Na+ into proximal tubule epithelial cells while moving H+ from the cells into the lumen
The names of muscles associated with the thumb frequently include what term?
A) brevis B) longus C) minimi D) digitorum E) pollicis
Solution 1 has a solute concentration of 10 mOsm. Solution 2 has a solute concentration of 3 mOsm. Solution 3 has a solute concentration of 25 mOsm. Solution 4 has a solute concentration of 10 mOsm. Which of the solutions are isotonic?
A) solution 1 and solution 4 B) solution 2 and solution 4 C) solution 1 and solution 3 D) solution 3 and solution 4