ANATOMY
LIMB VASCULATURE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
SNS fibers release epi/norepi in the heart to:
|
|
increase HR
|
|
|
increase myocardial contractility
|
|
|
decrease HR
|
|
|
increase stroke volume
|
Explanation:
Detailed explanation-1: -Norepinephrine gets released by postganglionic neurons of the sympathetic nervous system, which binds to and activates adrenergic receptors.
Detailed explanation-2: -Additionally, sympathetic stimulation is increased, resulting in further increases to heart rate, as well as stroke volume, which in turn results in an even greater restoration of cardiac output.
Detailed explanation-3: -The Adrenal Medulla and Integration of Metabolic Control The adrenal medulla is a modified sympathetic prevertebral ganglion that releases epinephrine and norepinephrine into the blood (about 4:1) in response to sympathetic stimulation.
There is 1 question to complete.