The sinoatrial node is also known as the pacemaker
Indicate whether the statement is true or false
True
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A nurse pricks your finger to type your blood. You flinch at the pain, pulling your hand back. This is called the __________ reflex.
A. convergence B. stretch C. flexor (withdrawal) D. tendon E. crossed extension
A(n) ____________________ is the alternating expansion and contraction of an artery as blood flows through it.?
Fill in the blank(s) with correct word
What effect does aldosterone have on sodium ion concentration in the ECF?
A) Aldosterone increases urinary sodium retention and therefore decreases sodium ion concentration in ECF. B) Aldosterone decreases urinary sodium retention and therefore increases sodium ion concentration in ECF. C) Aldosterone decreases urinary sodium retention and therefore decreases sodium ion concentration in the ECF. D) Aldosterone does not affect urinary sodium retention and therefore has no effect on sodium ion concentration in ECF. E) Aldosterone increases urinary sodium retention and therefore increases sodium ion concentration in ECF.
Select the cranial nerve of the parasympathetic nervous system that signals the heart
a. cardiac. b. coronary. c. hypoglossal. d. trigeminal. e. vagus.