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The somatic nervous system and the autonomic nervous system are part of both the peripheral nervous system and the central nervous system.

For the repolarization phase of an SA nodal cell action potential,

The atria are separated from the ventricles externally by the

Terminal and intramural ganglia are associated with the parasympathetic branch of the ANS.

Which statements are correct concerning the parasympathetic division of the ANS? a: Contains preganglionic cell bodies in brainstem nuclei b: Contains preganglionic cell bodies in the lateral horns of the T1–L2 regions c: Participates in the “fight-or-flight” response d: Helps maintain homeostasis e: Contains preganglionic cell bodies in the sacral region of the spinal cord

It is the contraction of the atria during atrial systole that completes the filling of the ventricles while the ventricles are in diastole.

Mucin _______ the viscosity of mucus, facilitating the ______ of dust and dirt particles.

Foreign particles

Postganglionic axons are

Cardiac reserve is