The main pacemaker of the heart is the _______.
A. AV node
B. SA node
C. bundle of his
D. purkinje node
Answer: B. SA node
Anatomy & Physiology
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Which type of receptor responds to deep pressure and vibrations?
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At equilibrium there is movement of molecules in all directions, but the concentrations of the particles is the same at all points.
a. true b. false
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Low levels of adrenal cortex hormones result in __________.
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Anatomy & Physiology