Select the correct statement.

Options

A. Neural co-ordination is fast and long lived.
B. Hypothalamus forms the basal part of diencephalon.
C. GH-RH is released by pituitary gland.
D. Pars distalis is the part of neurohypophysis in pituitary gland

Answer

To solve the question, "Select the correct statement," we will analyze each of the provided options step by step.

### Step 1: Analyze Option A
**Statement:** Neural coordination is fast and long-lived.
**Analysis:** Neural coordination is indeed fast due to the rapid transmission of nerve impulses. However, it is short-lived because these impulses do not last long. Therefore, this statement is incorrect.

**Hint:** Remember that neural impulses are quick but transient.

### Step 2: Analyze Option B
**Statement:** The hypothalamus forms the basal part of the diencephalon.
**Analysis:** The hypothalamus is located at the base of the diencephalon in the forebrain. It plays a crucial role in regulating various bodily functions, including temperature and metabolic processes. This statement is correct.

**Hint:** Consider the anatomical position of the hypothalamus in relation to the diencephalon.

### Step 3: Analyze Option C
**Statement:** GNRH is released by the pituitary gland.
**Analysis:** Gonadotropin-releasing hormone (GnRH) is actually released by the hypothalamus, not the pituitary gland. The pituitary gland responds to GnRH by releasing other hormones. Thus, this statement is incorrect.

**Hint:** Recall the source of GnRH and its role in the endocrine system.

### Step 4: Analyze Option D
**Statement:** Pars distalis is part of the anterior pituitary.
**Analysis:** While it is true that pars distalis is a part of the anterior pituitary (adenohypophysis), the statement is misleading because it implies a relationship with neurohypophysis (posterior pituitary). The pars distalis is not part of the neurohypophysis. Therefore, this statement is also incorrect.

**Hint:** Differentiate between the anterior and posterior parts of the pituitary gland.

### Conclusion
After analyzing all the options, we find that the correct statement is **Option B: The hypothalamus forms the basal part of the diencephalon.**

**Final Answer:** Option B