Bill does not begin puberty until he is 16. What effect would you predict this will have on his stature?
A) Bill will probably be a dwarf.
B) Bill will have bones that are denser than normal.
C) Bill will probably be taller than if he had started puberty earlier.
D) Bill will probably be shorter than if he had started puberty earlier.
E) The late onset of puberty will have no effect on Bill's stature.
C) Bill will probably be taller than if he had started puberty earlier.
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Which two mature blood cell types descend from myeloblasts?
A. Monocytes and lymphocytes B. Erythrocytes and platelets C. Neutrophils and basophils D. T cells and B cells
In human reproduction, once conception and successful implantation have occurred,
A) CG secreted by the placenta simulates the activity of LH. B) The corpus luteum continues progesterone and estrogen secretion for the first trimester. C) The placenta eventually assumes the production of progesterone and estrogen. D) All of the above
Z lines
a. are formed by the T tubules. b. extend down the middle of the I band. c. are formed by the cross bridges. d. are the thin filaments. e. extend down the middle of the sarcomere.
Luteal regression may be inhibited by ________.
A. stimulating the synthesis of LH B. inhibiting the synthesis of prostaglandins C. stimulating the synthesis of progesterone D. inhibiting the synthesis of FSH