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Physiology stack 2
weeks 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? A-almost 50 times faster B-almost 100 times faster C-almost 300 times faster D-almost 500 times faster | C-almost 300 times faster |
| A synapse consists of: A- a synaptic knob B- a synaptic cleft C- the plasma membrane of a postsynaptic neuron. D- all of the above | D- all of the above |
| Severe depression can be caused by a deficit in certain brain synapses of: A-acetylcholine. B-amines. C-amino acids. D-neuropeptides. | B-Amines |
| Nerves that innervate the floor of the pelvic cavity and some of the surrounding areas are found in the _____ plexus. A-sacral B-cervical C-coccygeal D-lumbar | C-coccygeal |
| During pregnancy, what happens to the oxygenated blood returned from the placenta via the umbilical vein? A-Flows into inferior vena cava B-flows into superior vena cava C-Flows into ductus venosus D-flows into ductus arteriosus | A-flows into inferior vena cava |
| The vagus is said to act as a “brake” on the heart. This situation is called A-cardiac inhibition. B-coronary inhibition. C-vagal inhibition. D-autonomic inhibition. | C-Vagal inhibition |
| The ingestion and destruction of microorganisms or other small particles is called A-pinocytosis. B-exocytosis. C-apedesis. D-phagocytosis. | D-phagocytosis |
| Ciliated cells lining the respiratory tract: A-help move air into and out of the lungs. B-trap and phagocytize microorganisms. C-help move the mucus blanket toward the pharynx. D-do both B and C. | C-help move the mucus blanket toward the pharynx. |
| By the time the blood leaves the lung capillaries to return to the heart, what percentage of the blood’s hemoglobin has united with oxygen? A-55% B-63% C-82% D-97% | D-97% |
| Hydrolysis refers to: A-breaking down a molecule of water to hydrogen and oxygen gas. B-using water to split larger compounds into smaller ones. C-using water to build larger compounds from smaller ones. D-none of the above. | B-using water ti split larger compunds into smaller ones. |
| Which phase(s) of gastric secretion is(are) stimulated by the sight, taste, and smell of food? A-Intestinal phase B-Cephalic phase C-Gastric phase D-All of the above | B-Cephalic Phase |
Created by:
mirilo87
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