GROSS ANATOMY

GROSS ANATOMY

AUTONOMIC NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Autonomic plexus that intervates the heart
A
renal
B
celiac
C
cardiac
D
superior mesenteric
Explanation: 

Detailed explanation-1: -The cardiac plexus is a plexus of nerves situated at the base of the heart that innervates the heart. The right sympathetic chain and its connections with the thoracic, abdominal, and pelvic plexuses.

Detailed explanation-2: -The innervation of the heart refers to the network of nerves that are responsible for the functioning of the heart. The heart is innervated by sympathetic and parasympathetic fibres from the autonomic branch of the peripheral nervous system. The network of nerves supplying the heart is called the cardiac plexus.

Detailed explanation-3: -The heart is innervated by parasympathetic and sympathetic fibers. The medulla is the primary site in the brain for regulating sympathetic and parasympathetic outflow to the heart and blood vessels.

Detailed explanation-4: -The deep cardiac plexus lies in front of the tracheal bifurcation behind the aortic arch and is formed by cardiac nerves arising from the cervical ganglia of the sympathetic trunk and cardiac branches off the vagus and recurrent laryngeal nerves. Thus, this plexus tends to have both left and right sided input.

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