Anterior pituitary secretes all except –
**Core Concept**
The anterior pituitary gland, also known as the adenohypophysis, plays a crucial role in regulating various bodily functions by secreting several essential hormones. These hormones include **growth hormone (GH)**, **thyroid-stimulating hormone (TSH)**, **adrenocorticotropic hormone (ACTH)**, **follicle-stimulating hormone (FSH)**, **luteinizing hormone (LH)**, and **prolactin (PRL)**. The anterior pituitary's secretions are primarily under the control of the **hypothalamus**.
**Why the Correct Answer is Right**
Since the correct answer is not specified, let's assume it's related to a hormone not secreted by the anterior pituitary. The anterior pituitary secretes the aforementioned hormones, which have diverse functions such as regulating growth, metabolism, and reproductive processes.
**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific option, it's challenging to provide a detailed explanation.
**Option B:** Similarly, without the option, we can't explain why it's incorrect.
**Option C:** Assuming this option might be related to a hormone, if it's one of the known anterior pituitary hormones, it would be incorrect because the question asks for an exception.
**Option D:** This option would be incorrect if it represents a hormone known to be secreted by the anterior pituitary.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that the **posterior pituitary** secretes **oxytocin** and **vasopressin (ADH)**, which are produced by the hypothalamus but released by the posterior pituitary. This distinction is crucial for understanding pituitary function and related disorders.
**Correct Answer:** Correct Answer: D. Oxytocin