Which gland stores its hormones before their release.

Options

A. Pineal
B. Thyroid
C. Pancreas
D. Pituitary

Answer

To answer the question "Which gland stores its hormones before their release?", we can follow these steps:

### Step-by-Step Solution

1. **Identify the Glands Mentioned**: The question provides four options: adrenal gland, thyroid gland, pancreas, and pituitary gland.

2. **Understand the Functions of Each Gland**:
- **Adrenal Gland**: Primarily releases hormones like adrenaline and cortisol directly into the bloodstream as needed.
- **Thyroid Gland**: Produces and stores hormones, specifically thyroxine (T4), which is stored before being released into the bloodstream.
- **Pancreas**: Releases insulin and glucagon, but does not store these hormones for extended periods; they are released as needed.
- **Pituitary Gland**: Often referred to as the "master gland," it releases various hormones based on the body's needs but does not store them in significant amounts.

3. **Determine Which Gland Stores Hormones**: Among the glands listed, the thyroid gland is unique in that it stores thyroxine before releasing it into the bloodstream. This storage allows the body to regulate metabolism effectively.

4. **Conclude the Answer**: Based on the functions and characteristics of the glands, the correct answer to the question is the **thyroid gland**, as it stores its hormone (thyroxine) before release.

### Final Answer
The gland that stores its hormones before their release is the **thyroid gland**.

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