Question

The hormone melatonin is secreted by the gland

• A. Pineal
• B. Adrenal
• C. Thyroid
• D. Pituitary

Answer 1

The correct option is A

Pineal

The correct option is A.

Explanation for the correct option:

1. It is a pinecone-shaped small gland located in the middle of the human brain in between the two hemispheres in an area called epithalamus.
2. The third ventricle's roof is connected to it by a short stalk, and it is situated in the middle of the brain, beyond the blood-brain barrier.
3. The pineal gland's primary job is to gather information from the environment about the condition of the light-dark cycle and transmit it so that the hormone melatonin may be produced and secreted.

Explanation for the incorrect options:

Option B:

1. The tiny, triangular-shaped adrenal glands, also called suprarenal glands, are found on top of both kidneys.
2. The immune system, blood pressure, response to stress, and other vital processes are all controlled by hormones that are produced by your adrenal glands.

Option C:

1. Thyroid Gland is a butterfly-shaped endocrine gland situated in the anterior portion of the neck.
2. A crucial hormone gland, the thyroid gland is important for the growth, development, and metabolism of the human body.

Option D:

1. At the base of the brain, the pituitary gland is situated.
2. By nerve fibers and blood arteries, the gland is linked to the hypothalamus, a region of the brain that affects the pituitary gland.
3. The pituitary gland's primary job is to generate and release a number of hormones that assist with vital biological processes including growth.

Final answer: The hormone melatonin is secreted by the gland pineal.