What part of the brain regulates the heart? Describe theautonomic nerve supply to the heart.
What part of the brain regulates the heart? Describe theautonomic nerve supply to the heart.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Question
What part of the brain regulates the heart? Describe the
autonomic nerve supply to the heart.
Expert Solution
Step 1
The nerve that supplies the heart is autonomic, comprising of both sympathetic and parasympathetic parts.
Step 2
The part of the brain that is responsible for regulating the heart is the medulla that lies within the brain stem superior to the spinal cord. It is the brain's leading site that functions in maintaining the autonomic nerve outflow to the heart. It is crucial for the regulation of arterial pressure.
The autonomic nerve supply from the medulla is categorised as sympathetic and parasympathetic. The efferent fibres from these nerves move to the heart, where they are responsible for modulating the target organs' activity.
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