Growth hormone (GH) or STH is secreted by

Options

A. Adrenal
B. Anterior lobe of pituitary
C. Posterior lobe of pituitary
D. Sex organs.

Answer

**Step-by-Step Solution:**

1. **Identify the hormone in question:** The question asks about the secretion of Growth Hormone (GH), also known as Somatotropin (STH).

2. **Understand the source of secretion:** Growth Hormone is a peptide hormone that plays a crucial role in growth, metabolism, and body composition.

3. **Determine the gland responsible for secretion:** The Growth Hormone is secreted by the anterior lobe of the pituitary gland. The pituitary gland is divided into two main parts: the anterior lobe (adenohypophysis) and the posterior lobe (neurohypophysis).

4. **Differentiate between the lobes of the pituitary gland:**
- The **anterior lobe** secretes several hormones including Growth Hormone, Prolactin, and Adrenocorticotropic Hormone (ACTH).
- The **posterior lobe** releases hormones such as Oxytocin and Vasopressin but does not produce Growth Hormone.

5. **Conclude the answer:** Based on the information, the correct answer to the question is that Growth Hormone (GH) or Somatotropin (STH) is secreted by the anterior lobe of the pituitary gland.

**Final Answer:** Growth Hormone (GH) or Somatotropin (STH) is secreted by the anterior lobe of the pituitary gland.

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