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Sci221 Week 14
set2
| Question | Answer |
|---|---|
| The magnitude of the action potential peaks when the sodium channels close. | true |
| In a myelinated neuron, the impulse can travel under the myelin between nodes of Ranvier. | true |
| The _____ consists of several structures that lie beneath the thalamus and form the floor of the third ventricle and the lower part of its lateral walls | hypothalamus |
| Which region of the brain plays a part in the mechanism responsible for emotions by associating sensory impulses with feelings of pleasantness and unpleasantness? | thalamus |
| The last step in the nonsteroid hormone mechanism of action is: | protein kinases activate other enzymes. |
| Blood viscosity stems mainly from the red blood cells but also partly from the _____ in blood. | protein molecules present |
| The chemoreceptors in the carotid bodies are particularly sensitive to: Correct Answer | hypercapnia. |
| Complement can best be described as a(n): | enzyme in blood |
| The PCO2 in alveolar air is _____ blood. | less than in the systemic venous &equal to the systemic arterial |
| The hormone that inhibits gastric muscle, slowing passage of food into the duodenum, is called: | gastric inhibitory peptide. |
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Kathyl0ve
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