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StudyStack Set 2

Physiology - Modules 7-13

Question / AnswerMultiple Choice - T/F
Which membrane receptor acts to directly change ion permeability when stimulated? A. G-protein-coupled receptors B. Metabotropic receptor C. Gated-channel receptor D. Ionotropic receptor C. Gated-channel receptor
In a myelinated neuron, the impulse can travel under the myelin between nodes of Ranvier. True or False True
Parasympathetic stimulation has no effect on any of the following areas except: A. sweat glands. B. skin blood vessels. C. the liver. D. the urinary bladder. A. sweat glands.
During pregnancy, what happens to the oxygenated blood returned from the placenta via the umbilical vein? A. It flows into the inferior vena cava. B. It flows into the superior vena cava. C. It flows into the ductus venosus. A. It flows into the inferior vena cava.
Blood from the brachiocephalic vein drains into the A. right posterior wall of the thorax. B. head, neck, and upper extremity. C. kidneys. D. lower trunk and extremity. B. head, neck, and upper extremity.
Recognition of antigens by antibodies occurs when an antigen’s epitopes fit into and bind to an antigen molecule’s antigen-binding site.
Dalton law states that the partial pressure of a gas in a mixture of gases is _____ to the total pressure of the mixture. directly related to the concentration of that gas in the mixture and
Which of the following would you expect to happen to cellular respiration during exercise? Increased cellular respiration occurs during exercise, causing a rise in plasma PCO2, which is detected by central chemoreceptors in the brain and perhaps peripheral chemoreceptors in the carotid sinus and aorta to cause an increase in respiration rate.
Which of the processes of mechanical digestion involves the esophagus? A. Deglutition B. Peristalsis C. Churning D. Both A and B D. Both A and B
During which stage of swallowing is there a risk of food entering respiratory pathways? A. Oropharyngeal B. Esophageal C. Chemical digestion D. Mastication A. Oropharyngeal
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