In a patient experiencing a parasitic worm infection, which of the following immune cells will greatly increase in number?
A. mast cells
B. eosinophils
C. monocytes
D. neutrophils
E. basophils
B
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The hydrolysis of ATP causes myosin to immediately
A) swivel, moving the actin molecule. B) bind more tightly to the actin (rigor). C) rotate into a position (cocked) to bind to actin. D) release from the actin. E) release of ADP.
Myosin contains binding sites for ________ and ________.
A. ATP; actin B. sodium; calcium C. troponin; ATP D. actin; calcium
The epidermal ridges and dermal ________ increase the area of contact between the epidermis and dermis to help connect these layers.
Fill in the blank(s) with the appropriate word(s).
A scientist develops a mouse that lacks the ability to express CCK1 receptors. Compared to a normal mouse, which of the following would be expected to be increased?
A. gastric acid secretion B. gallbladder contraction after a meal C. cytosolic Ca++ in pancreatic acinar cells D. firing of duodenal vagal afferents when food is in the lumen E. gastric emptying F. histamine release from ECL cells