Which of the following is NOT a function of the respiratory system?
A. Defensive mechanisms
B. pH regulation
C. Detect odors
D. Nutrient absorption
E. Exchanging gases
Answer: D
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When a person rises quickly from a sitting position, all of the following reactions will occur except
A) the carotid baroreceptors become less active. B) venous return is decreased. C) reflex vasoconstriction of peripheral blood vessels occurs. D) heart rate is reflexively elevated. E) cardiac output will decrease.
Which structure is an important site for early blood cell formation and is the first of the extraembryonic membranes to form?
A. Amnion B. Yolk sac C. Chorion D. Zona pellucida
Fast fibers have higher myosin _______ activity than slow fibers
Fill in the blank(s) with correct word
What body system, other than the nervous system, is very important for controlling activities of the digestive system?
A. Skeletal system B. Endocrine system C. Lymphatic system D. Muscular system