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 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
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