During emergency which of the following hormone is secreted?

Step-by-step solution

Adrenalin (epinephrine) is secreted by Chromaffin cells of adrenal medulla. The secretion of adrenalin is directly controlled by the autonomic nervous system, but not under the control of pituitary. Adrenalin is also called 'emergency hormone' because it contributes the fright, fight or flight reactions' which occur in condition of emergency. Increase in emotional disturbance increases the secretion of adrenalin, accelerating the rate of respiration, dilating respiratory passage, increasing blood pressure, heart be