A synergist is
A. a muscle working in opposition to another muscle.
B. the end of the muscle where the action occurs.
C. the muscle that does most of the movement.
D. the stationary end of the muscle.
E. a group of muscles that work together to cause movement.
E
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Which factor directly influences preload?
A) contractility B) heart rate C) stroke volume D) venous return E) parasympathetic tone
The osmotic pressure created by the presence of proteins is known as ________, which is (higher/lower) in the plasma than in the interstitial fluid.
Fill in the blank(s) with the appropriate word(s).
Neurotransmitters that are modified amino acids are
A) aspartic acid, glutamic acid, glycine, and GABA. B) dopamine, serotonin, epinephrine, and norepinephrine. C) enkephalins, endorphins, and substance P. D) potassium, sodium, and calcium ions
A nerve fiber is enclosed in its own fibrous sleeve called perineurium.
Answer the following statement true (T) or false (F)