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Stack2 Physiology
MidTerm A&P
| Question | Answer |
|---|---|
| Which of the following is not used by the body as a neurotransmitter? Nitric oxide Acetylcholine Carbon monoxide All of the above are used by the body as neurotransmitters. | All of the above |
| Which is true of an action potential? | The outside of the plasma membrane is negatively charged, and the inside is positively charged. |
| For a neurotransmitter to produce an inhibitory postsynaptic potential, which of the following channels must open? | Potassium and/or chloride channels |
| The parasympathetic and sympathetic divisions always act with a cooperative influence, and through summation of the impulses, the effect can be increased. T or F | False |
| If the dorsal root ganglia of the spinal nerve were destroyed, a person would lose _____ related to that pathway. | sensory perception |
| Which of the following is not an example of sympathetic stimulation? | Constriction of the bronchioles |
| The two-point discrimination test can be used to measure: | the sensitivity of the skin in various parts of the body. |
| In comparison with the nervous system, the regulatory effects of the endocrine system are: | slow to appear but long-lasting. |
| Which is not true of the hormone somatostatin? It is produced by the delta cells of the pancreas. It inhibits the secretion of glucagon. It stimulates the secretion of insulin. Both B and C are not true of the hormone somatostatin | It stimulates the secretion of insulin. |
| Accommodation for near vision necessitates | an increase in the curvature of the lens. constriction of the pupils. convergence of the two eyes. |
| Movement of hair cells in the organ of Corti against the _____ membrane can stimulate nerve impulse condition. | tectorial |
| Blood volume per kilogram of body weight varies inversely with: | body fat. |
| Which two factors promote the return of venous blood to the heart? | blood-pumping action of respirations and skeletal muscle contractions |
| A hematocrit of 56% would be an indication of: | polycythemia. |
| If a person were skiing high up in the mountains, she might feel that she is having trouble breathing (getting enough oxygen in her blood). This is because the: | lower atmospheric pressure lowers the PO2 and the diffusion gradient between the blood and the atmosphere is less. |
| The PCO2 in the atmosphere is: | less than in the alveolar air. |
| A drop in the body’s production of carbonic anhydrase would hinder the formation of: | carbonic acid. oxyhemoglobin. carbaminohemoglobin. |
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