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Iralie Evangelista
Physiology weeks 7-13
| Question | Answer |
|---|---|
| The hormone that stimulates the release of bicarbonate substance from the pancreas is: | secretin. |
| When the pressure in the lung is greater than atmospheric pressure: | expiration occurs. |
| The approximate partial pressure of oxygen at standard atmospheric pressure is about _____ mm Hg. | 160 |
| Which organ has several functions, including defense, hematopoiesis, red blood cell and platelet destruction, and blood reservoir? | spleen |
| Inhibition of sympathetic vasoconstrictor impulses is considered a major mechanism of | vasodilation. |
| The heart begins beating in the fetus at about what stage of development? | After about 4 weeks |
| Neurotransmitters are released in a synapse and bind to: | receptors on the postsynaptic neuron. |
| Within the nervous system, coding for the strength of a stimulus is accomplished through: | the frequency of nerve impulses. |
| Nerve impulses over the _____ nerve cause increased peristalsis and decreased heart rate. | vagus |
| Conduction by the sixth cranial nerve results in sensations of hearing. | False |