The acrosome of the spermatozoon
a. contains the sperm's genetic information
b. contains mitochondria for energy production
c. is a fructose-filled vesicle that provides energy for the spermatozoa
d. contains enzymes that enable the sperm to penetrate the ovum
e. contains microtubules that slide past each other to provide the sperm with motility
D
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Which of the following anatomical terms refers to the groin?
a) pelvic b) umbilical c) sternal d) otic e) inguinal
. Cross bridges are formed during muscle contraction when _____ on the thick filaments binds to _____ on the thin filaments
a) myosin; troponin b) myosin; troponin c) myosin; actin d) actin; myosin e) actin; tropomyosin
Homeostasis is the ability of the body to
A) ignore external stimuli to remain in a state of rest. B) prevent the external environment from changing. C) prevent the internal environment from changing. D) prevent excessive blood loss. E) quickly restore changed conditions to normal.
Muscle soreness can be produced by which of the following?
A) damage to muscle fibers B) enzymes in the extracellular fluid commonly found within muscle C) collagen fragments in the extracellular fluid D) all of the above