The region of the nasal cavity immediately internal to the nostrils is the ________; it contains coarse guard hairs.
A. nasopharynx
B. vestibule
C. respiratory region
D. choanae
E. olfactory region
Answer: B
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A general term used to refer to pain in the bones, ligaments, tendons, and muscles is __________.
Fill in the blank(s) with the appropriate word(s).
How does carbon monoxide affect red blood cells (RBCs)?
A. It causes them to shrivel. B. The carbon monoxide converts to carbon dioxide. C. The hemoglobin rejects carbon monoxide. D. The hemoglobin within the RBC bind to carbon monoxide. E. The RBCs clump together.
Why do people who have a heart attack often experience pain radiating along the left shoulder and arm?
A. Nociceptors from the cardiac and shoulder regions all send afferent signals through the vagus nerve. B. Nociceptors from the cardiac and shoulder regions all send afferent signals through the phrenic nerve. C. Lack of blood to the left shoulder and arm result in ischemia and stimulates nociceptors in those regions. D. Signals from the cardiac and shoulder region converge and follow the same pathway to the cortex. E. Signals from nociceptors in the heart diverge and stimulate pain sensations in a large region.
The ___ is the roof of the mouth.
Fill in the blank(s) with the appropriate word(s).