Question

Which hormone is responsible for Vasoconstriction?

Answer 1

Blood Vessels are controlled by chemical messengers (Hormone)in our body. These hormones give signals to Smooth muscles to Constrict or dilate. Vasoconstriction is narrowing of blood vessels. Hormone is normally present in our body and secreted by adrenal glands

complete ANSWER :
INTRODUCTION :
Vasoconstriction is also known as Vasospasm. It reduces the space or volume inside the blood vessel, so blood flow and blood vessel volume is reduced. During this time Blood flow is increased and causes high blood pressure. The hormones Responsible for Vasoconstriction are Norepinephrine and epinephrine.
1. Norepinephrine : Commonly known as noradrenaline. They act as Stress hormone and neurotransmitter. This hormone is released into the bloodstream during stress. It passes signals between nerve cells. They play an main role in person mood and ability to concentrate.
2. Epinephrine: Commonly known as adrenaline. They act as a neurotransmitter. They communicate between neurons. They are released into blood during strong emotions (fear or anger). They play a role in allergic response.

Note :
Epinephrine and norepinephrine hormones are secreted in the bloodstream during activation. They are secreted by Adrenal glands. These hormones act as neurotransmitters. They play a main role in the body's fight or flight response. When they are released into the bloodstream it causes blood vessels to narrow, it increases blood pressure, heart rate, and sugar level, Increased contractility. Vasoconstriction is the narrowing (constriction) of blood vessels by small muscles present in their walls. It happens when smooth muscles and Elastic fibres present in blood vessel walls tighten, this leads to smaller opening of blood vessels. when blood vessels constrict blood flow is slowed or blocked, so it leads to cardiac arrest or other diseases.