Name the gland for which following points are true ?
a. Its secretion is an amino acid derivative
b. It pours its secretion direction into blood
c. Its secretion also acts as neurotransmitter
d. Its secretion is destroyed after performing its function

Options

A. Hypothalamus
B. Epiphysis
C. Adenohypophysis
D. Neurohypophysis

Answer

To solve the question regarding the gland with specific characteristics, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Characteristics**: We need to analyze the four points given in the question:
- The secretion is an amino acid derivative.
- It pours its secretion directly into the blood.
- Its secretion also acts as a neurotransmitter.
- Its secretion is destroyed after performing its function.

2. **Understand Amino Acid Derivatives**: Amino acid derivatives are hormones that are derived from amino acids, such as tyrosine and tryptophan. Examples include epinephrine, norepinephrine, and melatonin.

3. **Consider the Endocrine System**: Since the gland pours its secretion directly into the blood, it indicates that we are looking for an endocrine gland, as opposed to exocrine glands which secrete through ducts.

4. **Evaluate Each Option**:
- **Hypothalamus**: While it does release hormones, it does not primarily secrete an amino acid derivative that fits all criteria.
- **Pineal Gland (Epiphysis)**: This gland secretes melatonin, which is derived from the amino acid tryptophan. It is an endocrine gland, acts as a neurotransmitter, and is broken down after its function is completed.
- **Adenohypophysis (Anterior Pituitary)**: This gland secretes various hormones but does not fit all the criteria.
- **Neurohypophysis (Posterior Pituitary)**: Similar to the adenohypophysis, it does not primarily secrete amino acid derivatives.

5. **Conclusion**: Based on the analysis, the gland that fits all the criteria is the **Pineal Gland (Epiphysis)**, which secretes melatonin.

### Final Answer:
The gland is the **Pineal Gland (Epiphysis)**.

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