Quiet expiration requires the ________.
A. contraction of the diaphragm and the external intercostals only
B. relaxation of all the respiratory muscles
C. contraction of the diaphragm and the internal intercostals only
D. contraction of the diaphragm only
Answer: B
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Answer the following statement(s) true (T) or false (F)
1. There are more bones in the skeleton of an infant compared to an adult. 2. The mastoid process cannot be palpated on a living person. 3. Healthy paranasal sinuses are filled with mucus. 4. The optic canal is part of the sphenoid bone. 5. All ribs articulate with the sternum. 6. Men have one rib fewer than women.
The inner cell mass
A. becomes part of the placental membrane. B. gives rise to the embryo. C. becomes part of the chorion. D. forms the amnion.
The rhomboid muscles are innervated by (the)
A) dorsal scapular nerve. B) accessory nerve. C) long thoracic nerve. D) cervical nerves. E) None of the answers are correct.
If you cut bundles of axons and their myelin sheaths in the PNS, you cut
A. ganglia. B. nuclei. C. nerves. D. gray matter. E. nerve tracts.