Some marrow of long bones is termed "yellow" marrow under normal conditions. The function of yellow marrow is to
A. store bone-forming cells.
B. store adipose tissue.
C. manufacture tissue cells for the skin.
D. make vitamin D.
E. manufacture blood cells.
B
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Which of the following is not true of polysynaptic reflexes?
A) They involve pools of interneurons. B) They are intersegmental in distribution. C) They involve reciprocal inhibition. D) They involve one muscle group. E) They have reverberating circuits.
Which of the following is NOT a vital function of the medulla oblongata?
A. Respiratory control B. Vasomotor control C. Cardiac control D. Thirst control
Why are eyelashes shorter than terminal hairs on the scalp?
A) The growth stage of an eyelash is shorter. B) The vascular supply of the eyebrow follicle is much less than that of the hair follicle on the scalp. C) Hormones in the eyebrow follicle turn off growth after it has reached a predetermined length. D) Eyelashes grow slower than terminal hairs.
Which of the following muscles is responsible for medially rotating the tibia on the femur when the knee is flexed?
A. Vastus medialis B. Adductor brevis C. Semitendinosus D. Sartorius E. Piriformis