After being frightened by a loud noise, Cira experienced activation of her adrenaline as her body prepared for an emergency.
Epinephrine, often known as adrenaline, is a hormone and drug that controls visceral functions (e.g., respiration). Both the adrenal glands and a few neurons in the medulla oblongata ordinarily create adrenaline. It is crucial for the fight-or-flight response because it increases blood flow to muscles, the heart's output through influencing the SA node, pupil dilation in response to stress, and blood sugar levels.
By attaching to alpha and beta receptors, it accomplishes this. Numerous animals and certain single-celled creatures include it. Polish scientist Napoleon Cybulski initially isolated adrenaline in 1895.
Learn more about Adrenaline with the help of the given link:
https://brainly.com/question/8678339
#SPJ4
