Question

Heart beat is regulated by-

• A. Insulin
• B. Adrenaline
• C. Optic nerve
• D. Growth hormone

Answer 1

The correct option is B

Adrenaline

The correct option is B:

Explanation of the correct option :

1. The neurotransmitters epinephrine (adrenaline) and norepinephrine (noradrenaline) govern the contraction and relaxation of the heart.
2. The fight-or-flight reaction is the name given to adrenaline's effect.
3. It causes the heart to beat faster.

Explanation of the incorrect option :

Option A:

1. Insulin helps in the regulation of blood sugar levels.

Option C:

1. The optic nerve helps in the transmission of electrical impulses from your eyes to the brain.

Option D:

1. Growth Hormone is a stress hormone that increases the concentration of glucose and free fatty acids and stimulates the production of IGF-1.

Final answer: Heartbeat is regulated by-Adrenaline