LAQ : Which hormone is known as “emergency hormone”? From which gland it is secreted

Question 10

Which hormone is known as “emergency hormone”? From which gland it is secreted.  Discuss two functions of that hormone.

 Answer

(a) The hormone known as “emergency hormone” is adrenaline or epinephrine.

(b) Adrenaline is secreted from the adrenal gland, specifically from the medulla region.

(c) Two functions of adrenaline are:

1. Fight or flight response: Adrenaline is released in response to stress or danger, and prepares the body for a “fight or flight” response by increasing heart rate, dilating the airways, and mobilizing energy from glycogen stores. This helps the body to respond quickly to a threat.
2. Blood pressure regulation: Adrenaline also helps to regulate blood pressure by constricting blood vessels in certain areas of the body, such as the digestive system, and dilating blood vessels in other areas, such as the muscles. This helps to divert blood flow to where it is needed most during an emergency.