Growth hormone is secreted by the

• A. pineal gland.
• B. pituitary gland.
• C. thyroid.
• D. gonads.

Answer: (B)

Verified step by step guidance

1. Identify the function of the growth hormone in the human body, which is primarily to stimulate growth, cell reproduction, and cell regeneration.
2. Understand the role of the pineal gland, which is primarily involved in the regulation of sleep-wake cycles through the secretion of melatonin, not growth hormone.
3. Recognize the primary function of the pituitary gland, which is often referred to as the 'master gland' because it regulates various hormones, including the growth hormone.
4. Consider the role of the thyroid gland, which primarily regulates metabolism through the secretion of thyroid hormones, not growth hormone.
5. Evaluate the function of the gonads, which are responsible for producing sex hormones and gametes, and do not secrete growth hormone.