How many of the following hormones were synthesised and secreted by pituitary gland ?
* growth hormone
* prolactin
* thyroxine
* aldosterone
* luteinizing hormone
* follicle - stimulating hormone

Options

A. Two
B. Four
C. Six
D. One

Answer

To determine how many of the listed hormones are synthesized and secreted by the pituitary gland, we will analyze each hormone one by one.

1. **Growth Hormone (GH)**: This hormone is indeed synthesized and secreted by the anterior lobe of the pituitary gland. It plays a crucial role in growth, metabolism, and body composition.

2. **Prolactin (PRL)**: This hormone is also synthesized and secreted by the anterior lobe of the pituitary gland. It is primarily involved in lactation and breast development.

3. **Thyroxine (T4)**: This hormone is **not** synthesized or secreted by the pituitary gland. Instead, it is produced by the thyroid gland, which is regulated by the thyroid-stimulating hormone (TSH) secreted by the pituitary gland.

4. **Aldosterone**: This hormone is **not** produced by the pituitary gland. Aldosterone is synthesized and secreted by the adrenal cortex, which is part of the adrenal glands located on top of the kidneys.

5. **Luteinizing Hormone (LH)**: This hormone is synthesized and secreted by the anterior lobe of the pituitary gland. It plays a key role in regulating the menstrual cycle and ovulation in females and testosterone production in males.

6. **Follicle-Stimulating Hormone (FSH)**: This hormone is also synthesized and secreted by the anterior lobe of the pituitary gland. It is important for the development of eggs in females and sperm production in males.

Now, let's summarize the hormones that are synthesized and secreted by the pituitary gland:
- Growth Hormone (GH) - Yes
- Prolactin (PRL) - Yes
- Thyroxine (T4) - No
- Aldosterone - No
- Luteinizing Hormone (LH) - Yes
- Follicle-Stimulating Hormone (FSH) - Yes

**Total hormones synthesized and secreted by the pituitary gland: 4 (GH, PRL, LH, FSH)**

Thus, the answer to the question is **4 hormones**.