Parasympathetic neural signal decreases the cardiac output...

Parasympathetic neural signal decreases the cardiac output by
(a) Decreasing the rate of heartbeat
(b) Decreasing the speed conduction of action potential
(c) Both (a) and (b)
(d) Increasing adrenal medulla hormones secretion

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Cardiac Output

Cardiac output is the amount of blood the heart ejects per minute, determined by the heart rate and stroke volume. A decrease in heart rate and slower conduction of action potentials, both effects of parasympathetic activation, lead to a reduced cardiac output.

Cardiac Conduction

Cardiac conduction refers to the process by which electrical signals travel through the heart, coordinating contractions. Parasympathetic stimulation slows down this conduction, particularly through the atrioventricular node, which contributes to a reduction in heart rate.

Heart Rate Regulation

Heart rate regulation involves inputs from the autonomic nervous system. Specifically, parasympathetic activation reduces the firing rate of the sinoatrial node, leading to a decrease in the number of heartbeats per minute.

Parasympathetic Nervous System

This system is part of the autonomic nervous system that promotes a 'rest and digest' state. It releases neurotransmitters like acetylcholine, which act to decrease the heart rate and slow the conduction of electrical impulses through the heart.

Transcript

Please give Ace some feedback