Exam2 Practice Key

Exam2 Practice Key - BIO 308: Human Physiology Key for...

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BIO 308: Human Physiology Key for Practice Examination 2 2007 March 3 Answer Key 1. D Opioid peptides are inhibitory neuromodulators which act at synapses 2 E Substance P is both an excitatory neurotransmitter at 1 st order pain synapses and a substance released from nociceptor endings. 3. C 4. D Convergence-projection mechanism 5. B Other opioid peptides are enkephalins and dynorphin 6. C Hypotension is characteristic of intense deep and visceral pain, which is mediated mainly by unmyelinated fibers (c-fibers), but I didn’t I didn’t include much about visceral pain in class, so I should not have included this question in the practice exam 7. E 8. A Otitis media can block sound wave transmission through the middle ear, thereby blocking air/ossicular conduction, but it does not affect the cochlea or the auditory nerve fibers, so bone conduction remains 9. A 10. D Cochlear nerve lesion would cause sensory-neural deafness, so both air conduction and bone conduction would be lost 11. B
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Exam2 Practice Key - BIO 308: Human Physiology Key for...

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