Movements involving moving around an axis or in an arc would be classified as ______ movements.
A. angular
B. circular
C. arcuate
D. linear
Answer: B. circular
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Aldosterone
A) helps decrease blood volume. B) is secreted in response to elevated levels of sodium in the blood. C) increases the concentration of sodium in urine. D) promotes sodium retention in the kidneys. E) functions in pH regulation.
Freckles are the result of
A. melanocyte number and genetic inheritance. B. melanocyte number and sun exposure. C. melanocyte activity, genetic inheritance, and sun exposure. D. melanocyte number, genetic inheritance, and diet. E. melanocyte activity and diet.
Which of the following omits some stage(s) of the cell cycle?
A. Interphase, mitosis B. G1, S, G2, mitosis C. Interphase, prophase, metaphase, anaphase, telophase, cytokinesis D. Prophase, metaphase, anaphase, telophase, cytokinesis E. G1, DNA replication, G2, mitosis
The factor(s) that determine the duration of a twitch in various types of fibers is the speed of the
A) hydrolysis of ATP only. B) removal of Ca2+ ions from the sarcoplasm only. C) removal of Ca2+ ions from the sarcoplasm and hydrolysis of ATP and movement of Na+ across their membranes. D) movement of Na+ across their membranes only. E) removal of Ca2+ ions from the sarcoplasm and hydrolysis of ATP.