The purpose of residual air in the lungs is to _____.?
A) ?prevent the lungs from collapsing
B) ?prevent the temporary stoppage of breathing
C) ?allow the continuous exchange of gases between breaths
C
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Which of the following does not arise from the embryonic mesoderm?
A. The nervous system B. The blood vessels C. The mesothelium D. The skeletal system E. The dermis
Which of the following is not part of the inflammatory response?
a. Localized vasodilation b. Migration of neutrophils and macrophages to the site of injury c. Kinin activation d. Interferon inhibition of viral replication e. Formation of interstitial-fluid clots that wall off bacterial invaders
Which of the following statements describes the total refractory period of cardiac muscle?
What will be an ideal response?
The brain neurotransmitter that is an important stimulus for food intake is
A) leptin. B) orexin. C) ghrelin. D) neuropeptide Y. E) insulin.