The ________ raises your eyebrow.
A. zygomaticus
B. masseter
C. orbicularis oculi
D. frontalis
Answer: D
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The primary route for ion loss from the body is the ________ system.
A) integumentary B) cardiovascular C) digestive D) respiratory E) urinary
On a muscle fiber, the two terminal cisternae and the centrally placed T-tubule form a structure called a ________.
Fill in the blank(s) with the appropriate word(s).
Erection and ejaculation can be initiated by
A. manual stimulation of the penis. B. contraction of smooth muscle. C. impulses from the cerebellum. D. increased blood levels of testosterone. E. increased levels of LH and FSH.
Identify the FALSE statement.
A) Gametogenesis begins in the female fetus. B) Androgens control the development of reproductive organs in the male fetus. C) Estrogens control the development of the reproductive organs in the female fetus. D) Meiosis is never completed in most oocytes. E) Females have one less active chromosome than males.