Blood volume varies with
A. strength of nervous signals.
B. body fat content.
C. bone density.
D. muscle mass.
Answer: B
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Of the three artery types, the elastic arteries have the better ability to vasoconstrict and vasodilate.
Answer the following statement true (T) or false (F)
The stages that appear during spermatogenesis area: spermatidb: primary spermatocytec: spermatogoniumd: spermatozoone: secondary spermatocyteWhat is the correct order of appearance of these stages?
A. d, b, c, e, a B. b, e, c, d, a C. a, c, b, e, d D. c, b, e, a, d E. c, e, d, a, b
The process by which cells secrete cellular products into the extracellular environment is ________.
A. pinocytosis B. exocytosis C. endocytosis D. phagocytosis
The early embryo has a single structure which will become either a penis or clitoris but not both at once.
a. true b. false