Lecture 33: ANS (Parasympathetic Division)

Question 1

Differentiate between the parasympathetic and
sympathetic nervous systems in terms of
anatomy, neurotransmitters used, and the
effects produced by each system.

Answer 1

*see Lecture 32

Question 2

Describe syncope and its relationship to the

parasympathetic nervous system.

Answer 2

• loss of consciousness due to insufficient supply of oxygen to the brain
• parasympathetic causes decrease in heart rate, contractility, and blood pressure (overractive parasympathetic nervous system, ANS not maintaining blood pressure)