Question

The hormone thyroxine is secreted by

• A. Pituitary gland
• B. Adrenal gland
• C. Thyroid gland
• D. Pancreas

Answer 1

The correct option is C

Thyroid gland

The correct option is C:

Explanation for the correct answer:

1. The thyroid is located in the neck.
2. The thyroid releases thyroxine hormone which stimulates respiration and growth rate.

Explanation for the incorrect answer:

Option A:

1. The pituitary gland is located at the base of the brain, it releases Thyrotrophic hormone (TTH), and Growth hormone (GH).
2. It controls the growth and controls the activity of other glands so it is called the master gland.

Option B:

Adrenal-

1. Located above both kidneys like a cap.
2. It releases adrenaline hormone that helps the body to fight stress.

Option D:

Pancreas-

1. Located between the stomach and small intestine.
2. It secretes two hormones- insulin(decreases blood glucose level) and glucagon (increases blood sugar level).

So, the hormone thyroxine is secreted by the thyroid gland.