Pituitary gland is divided into

Options

A. Adenohypophysis and neurohypophysis
B. adenohypophysis and pars distalis
C. adenohypophysis and pars intermedia
D. adenohypophysis and anterior pituitary

Answer

### Step-by-Step Solution:

1. **Understanding the Pituitary Gland**: The pituitary gland is a crucial part of the endocrine system that releases various hormones and is often referred to as the "master gland" because it regulates many bodily functions.

2. **Division of the Pituitary Gland**: The pituitary gland is divided into two main sections:
- **Anterior Lobe** (Front Lobe)
- **Posterior Lobe** (Back Lobe)

3. **Names of the Lobes**:
- The **Anterior Lobe** is also known as the **Adenohypophysis**.
- The **Posterior Lobe** is referred to as the **Neurohypophysis**.

4. **Origin of the Lobes**:
- The **Adenohypophysis** (anterior lobe) is derived from **oral ectoderm** and is of epithelial origin.
- The **Neurohypophysis** (posterior lobe) is derived from **neural ectoderm**.

5. **Functions of the Lobes**:
- The **Adenohypophysis** is responsible for regulating functions such as stress response, growth, reproduction, and lactation.
- The **Neurohypophysis** primarily coordinates fluid balance in the body.

6. **Additional Structures**:
- The **Pars Distalis** is a part of the Adenohypophysis and constitutes the majority of it.
- The **Pars Intermedia** is the section of tissue that lies between the posterior pituitary and the pars distalis.

7. **Conclusion**: The pituitary gland is divided into the **Adenohypophysis** (anterior lobe) and **Neurohypophysis** (posterior lobe).