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The release of which hormone causes simultaneous increase in heartbeat and breathing rate?
Question

The release of which hormone causes simultaneous increase in heartbeat and breathing rate?

A.

Serotonin

B.

Adrenaline

C.

Estrogen

D.

Thyroxin

Correct option is B

The correct answer is: (B) Adrenaline
Explanation:
Adrenaline (also called epinephrine) is a hormone secreted by the adrenal glands in response to stress, fear, or excitement. It triggers the "fight or flight" response,
causing an increase in heartbeat and breathing rate to supply more oxygen and energy to muscles. This helps the body react quickly in emergency situations.
Information Booster:
  • Adrenaline is released by the adrenal medulla, located above the kidneys.
  • It dilates airways to increase oxygen intake.
  • It increases blood pressure by constricting blood vessels.
  • Adrenaline breaks down glycogen into glucose, providing instant energy.
  • Excessive adrenaline release can cause anxiety, rapid heartbeat, and sweating.
Additional Information:
  • Serotonin : A neurotransmitter that regulates mood, sleep, and digestion.
  • Estrogen : A female sex hormone responsible for reproductive functions and development.
  • Thyroxin : A hormone produced by the thyroid gland that regulates metabolism and energy levels.

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