The muscle cells of a marathon runner's legs would exhibit all these characteristics except
a. high resistance to fatigue.
b. low myoglobin content.
c. low glycogen content.
d. many mitochondria.
e. slow speed of contraction.
B
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Most of the iron that is removed from degraded hemoglobin is
A) excreted by the kidneys. B) excreted by the liver. C) excreted by the intestines. D) recycled to the red bone marrow. E) stored in yellow bone marrow.
When an individual is exposed to extremely cold air the dermal blood vessels will dilate so that more blood will be brought closer to the outside surface of the skin
Indicate whether the statement is true or false
About the time of ovulation, the anterior pituitary gland releases a surge of
A) LH. B) progesterone. C) androgen. D) estrogen.
What is NOT a function of fibroblasts in wound healing?
A. Bring about scar formation B. Fight infections C. Promote tissue regeneration D. Pull the margins of wound together