Which hormone does the sympathetic nervous system release to increase heart rate.

Biology

2 answers:

sertanlavr [38]2 years ago

8 0

The sympathetic nervous system releases hormones known as catecholamines which increase the heart rate.

<h3>What is a heart rate? </h3>

it is the number of contractions of the heart per minute.

<h3>What are catecholamines?</h3>

These are the neurotransmitters that have a catechol and a side chain that is an amine.

<h3>Which catecholamines are released by the sympathetic nervous system?</h3>

Epinephrine and norepinephrine are the catecholamines that are released by the sympathetic nervous system to increase the heart rate.

<h3>Where are these hormones released?</h3>

These hormones are released in the blood.

<h3>How does this hormone increase the heart rate?</h3>

"These hormones are released at the neuromuscular junction of the cardiac nerves."
"They shorten the repolarization period."
This speeds up the rate of depolarization and contraction and thus the heart rate is increased.

To learn more about sympathetic nervous system, hormones and heart rate here,

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Wittaler [7]2 years ago

4 0

Answer:

catecholamines -

epinephrine

norepinephrine

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The sympathetic chain contains a group of cell bodies called the sympathetic chain GANGLIA. This structure contains a second cell body for the sympathetic nervous system, the first in the series being found in the THORACOLUMBAR REGIONS' lateral horn of spinal segments T1-L2. The purpose of the VENTRAL AND DORSAL rami is to carry visceral motor and visceral sensory neurons to and from this sympathetic chain.

Explanation:

The sympathetic trunks (sympathetic chain, gangliated cord) are a paired bundle of nerve fibers that run from the base of the skull to the coccyx.

See the picture attached.