L22: Autonomic Control of the Heart

(symp) Cell bodies of preganglionics are located in the ______.

spinal cord

(symp) Long postganglionic fibers emerge from which three ganglia?

-superior cervical
-inferior cervical
-stellate ganglia

(sympathetic) Fibers on the _____ side of the heart have a greater effect on heart rate than fibers on the _____.

right, left

(sympathetic) Fibers on the _____ side of the heart have a greater effect on ventricular contractility than the fibers on the _____ side.

left, right

(parasympathetic) Fibers on the _____ side of the heart have a greater effect on AV nodal conduction than the fibers on the _____ side.

left, right

(para) Cell bodies of preganglionics are located in the _____ & the _____.

-dorsal motor nucleus (in the vagus)
-nucleus ambiguus (in the brain stem)

true or false
The ventricles are sparsely innervated by the sympathetic system.

false - parasympathetic system

Nm is a nicotinic receptor that binds AcH at _____.

neuromuscular junctions

Nn is a nicotinic receptor that binds AcH at _____.

postganglionic neurons