The cells of the juxtaglomerular apparatus help regulate:
a. ammonia levels
b. acid-base balance
c. blood pressure
d. all of the above
c. blood pressure
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When there is a resistance to the movement produced by a given limb muscle,
A) the muscle involved in the movement immediately shortens when stimulated. B) there is a decrease in the amount of force generated by extrafusal muscle fibers. C) muscle tone is increased and more motor units are recruited to the contraction. D) gamma motor neurons are inhibited by higher brain centers. E) intrafusal fibers receive fewer action potentials from the gamma motor neurons.
Vasoconstriction of blood vessels changes the flow of blood through them by ____________________ (increasing/decreasing) it
Fill in the blank(s) with correct word
The time between cell divisions is called ________.
A. telophase B. prophase C. metaphase D. interphase E. anaphase
AIDS is caused by infection of ____ by HIV
a. monocytes b. basophils c. T lymphocytes d. B lymphocytes