One of the following is hormone secreted from Heart :

Question

Accepted Answer

Option 1, Atrial Natriuretic Factor (ANF), is the correct answer because it is a hormone specifically secreted by the heart. ANF is produced by the cardiac muscle cells in the atria of the heart. Its primary function is to regulate blood pressure and fluid balance. When the atria are stretched due to increased blood volume, ANF is released into the bloodstream. It acts to reduce blood pressure by causing vasodilation and promoting the excretion of sodium and water by the kidneys, which decreases blood volume.

Now, let's explain why the other options are incorrect:

2. Noradrenaline: This hormone is primarily secreted by the adrenal glands, specifically the adrenal medulla, and also by certain neurons in the nervous system. It plays a role in the body's fight-or-flight response by increasing heart rate and blood pressure. It is not secreted by the heart.

3. Vasopressin: Also known as antidiuretic hormone (ADH), vasopressin is produced by the hypothalamus and released by the posterior pituitary gland. It helps regulate water balance in the body by increasing water reabsorption in the kidneys. It is not secreted by the heart.

4. Adrenaline: Like noradrenaline, adrenaline is secreted by the adrenal medulla. It is involved in the fight-or-flight response, increasing heart rate, and energy availability. It is not produced by the heart.

In summary, Atrial Natriuretic Factor is the only hormone among the options that is secreted by the heart, making Option 1 the correct answer.