Extensors of the thigh are controlled by the
A) tibial nerve.
B) femoral nerve.
C) fibular nerve.
D) iliohypogastric nerve.
E) obturator nerve.
B) femoral nerve.
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If a secondary oocyte is fertilized and successfully implants in the uterine lining,
A. the corpus luteum is maintained until the placenta begins to secrete estrogen and progesterone. B. the uterine lining undergoes a proliferative phase. C. the corpus albicans secretes gonadotropin-inhibiting hormone to prevent further follicular development. D. the ovarian cycle begins again. E. All of the choices are correct.
Some fish have the ability to keep certain parts of their body warm by the use of retia. Retia are
A) Countercurrent heat exchangers. B) Found in locomotor muscles of certain species of large fish, such as tuna and lamnid sharks. C) Special adipose cells that generate heat. D) A and B
The complimentary messenger RNA strand that would be synthesized from the DNA base sequence of CTGAC would be
GACTG. UGACU. AGTUG. GACUG. GACGU.
Whether or not fertilization occurs, the final destination of the ovum is the __________.
a. myometrium b. endometrium c. placenta d. serosa