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Week 14
| Question | Answer |
|---|---|
| When an impulse reaches a synapse | chemical transmitters are released |
| For a neurotransmitter to produce an inhibitory postsynaptic potential, which of the following channels must open | potassium and/or chloride channels |
| If the dorsal root ganglia of the spinal nerve were destroyed, a person would lose ______ related to that pathway | sensory perception |
| a child was frightened by a large dog. The pupils of the child's eyes became dilated, and the heart and respiratory rates increased. These symptoms were caused by stimulation of | the sympathetic nervous system |
| The two-point discrimination test can be used to measure | the sensitivity of the skin in various parts of the body |
| One of the few hormones that functions on a positive-feedback loop is | oxytocin |
| The physiological mechanism that disssolves clots is known as | fibrinolysis |
| ______ is used to determine the volume percentage of red blood cells in whole blood | Hematocrit |
| Which of the following is a powerful poison that acts directly on any cell and quickly kills it | lymphotoxin |
| Because T cells attack pathogens more directly. T-cell immune mechanisms are classified as ________ immunity | cell-mediated |
| 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 | 97% |
| If the tidal volume of a given individual is 500 ml, then the anatomical dead space is approximately _______ ml | 150 |
| The substances absorbed into lymph capillaries are | glycerol and fatty acids |
| The hormoney that stimulates the gallbladder to release bile is | cholecystokinin |