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Physiology week 7-13
| Question | Answer |
|---|---|
| When current leaps across an insulating myelin sheath from node to node, the type of impulse conduction is called: | saltatory conduction. |
| No impulse can be sent through a neuron: | during the absolute refractory period. |
| The part of the brain that can directly influence or inhibit the release of hormones from the pituitary is the: | hypothalamus. |
| If the ventral nerve root of a spinal nerve were destroyed, a person would lose _____ related to that pathway. | willed movement |
| In comparison with the nervous system, the regulatory effects of the endocrine system are: | slow to appear but long-lasting. |
| The olfactory tract carries impulses associated with: | smell |
| _____ is used to determine the volume percentage of red blood cells in whole blood. | Hematocrit |
| What is the functional significance of large areas of cardiac muscle being electrically coupled to form a single functional syncytium? | Because they form a syncytium, muscle cells can pass an action potential along a large area of the heart wall, stimulating contraction in each muscle fiber of the syncytium. |
| The presentation of an antigen by an antigen-presenting cell activates the T cell. The cell then divides repeatedly to form a clone of identical sensitized T cells that form | effector T cells and memory cells. |
| During their residence in the thymus, pre-T cells develop into _____, cells that proliferate as rapidly as any in the body. | thymocytes |
Created by:
Ceveillard
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