A muscle fiber exposed to a series of stimuli of increasing frequency combines individual twitches (summation) which results in

A. a latent period.
B. complete sustained contraction.
C. muscle tone.
D. flaccid muscles.


Answer: B

Anatomy & Physiology

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The proximal convoluted tubule is lined with a

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This protein is activated by the Ca2+-calmodulin complex to phosphorylate the myosin light chain protein.

A) myosin heavy chain B) myosin light chain kinase C) myosin light chain phosphatase D) tropomyosin

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Growth hormone exerts metabolic effects unrelated to growth

Indicate whether the statement is true or false

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All veins transport blood toward the heart.

Answer the following statement true (T) or false (F)

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