Which of the following is NOT a function of the respiratory system?
A) vocalization
B) electrolyte balance of blood
C) enhancing venous return
D) heat loss
E) acid-base balance of blood
Answer: B) electrolyte balance of blood
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The monotremes differ from all other mammals by:
A. laying eggs B. being restricted to Australia and New Guinea C. lacking a placenta D. having poorly developed nipples E. All of the choices provided are correct
All of the following are adaptations against predation in the open ocean except:
a. transparent bodies. b. colorful bodies. c. colonial lifestyles. d. countershading. e. silvery coloration.
In the internal leaf structure shown above, the item labeled "2" is
a. a vascular bundle. b. spongy mesophyll. c. epidermis. d. a stoma. e. palisade mesophyll.
If a physician hears abnormal heart sounds while examining a patient with a stethoscope, this would most likely indicate a problem with
a. the firing of the sinoatrial node. b. the contraction of the heart muscle. c. the function of the heart valves. d. the electrical signal from the muscles of the ventricles. e. the flow of blood into the atria.