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Physiology Week 7-13
| Question | Answer |
|---|---|
| The fastest nerve fibers in the body can conduct an impulse that is how much faster than the slowest fibers in the body? | Almost 300 times faster |
| Nerves that innervate the floor of the pelvic cavity and some of the surrounding areas are found in the _____ plexus. | coccygeal |
| The last step in the nonsteroid hormone mechanism of action is: | protein kinases activate other enzymes. |
| During pregnancy, what happens to the oxygenated blood returned from the placenta via the umbilical vein? | It flows into the inferior vena cava. |
| Which antibody is synthesized by immature B cells and then inserted into their plasma membranes? | immunoglobulin M |
| Recognition of antigens by antibodies occurs when an | antigen’s epitopes fit into and bind to an antigen molecule’s antigen-binding site. |
| Chemical digestion requires the secretion of _____ into the lumen of the GI tract. | digestive enzymes and bile |
| Peristalsis is regulated in part by the intrinsic stretch reflexes. It is also thought to be stimulated by the hormone | cholecystokinin (CCK) |
| Oxygen enters blood from alveolar air because the partial pressure of alveolar air is | greater than the partial pressure of incoming blood. |
| Blood from the brachiocephalic vein drains into the | head, neck, and upper extremity. |
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kleinadf