The gland that stores hormone before its secretion is

Options

A. the smallest endocrine glands
B. the largest endocrine glands
C. the heterocrine glands
D. the endocrine gland which is considered as the vestigial third eye

Answer

To solve the question "The gland that stores hormone before its secretion is", we can follow these steps:

### Step 1: Understand the question
We need to identify which gland is responsible for storing hormones before they are released into the bloodstream.

**Hint:** Focus on the function of different glands in the endocrine system.

### Step 2: Analyze the options
1. **Small endocrine gland**: These glands are generally not known for storing hormones. They produce hormones but do not have a significant storage function.

**Hint:** Consider the size and function of small endocrine glands.

2. **Largest endocrine gland**: The largest endocrine gland is the thyroid gland, but it does not store hormones in the way the question implies. However, the posterior pituitary gland stores hormones like oxytocin and vasopressin before their secretion.

**Hint:** Think about which glands are known for hormone storage.

3. **Heterocrine glands**: These glands have both endocrine and exocrine functions, like the pancreas, but they do not primarily store hormones.

**Hint:** Remember the definition of heterocrine glands and their functions.

4. **Endocrine gland (vestigial third eye)**: This option is misleading. The term "vestigial" refers to something that has lost its original function, and this does not relate to hormone storage.

**Hint:** Consider the meaning of "vestigial" in the context of glands.

### Step 3: Identify the correct answer
Based on the analysis, the correct answer is the **posterior pituitary gland**, which is known for storing hormones like oxytocin and vasopressin before they are released into the bloodstream.

**Final Answer:** The gland that stores hormone before its secretion is the **posterior pituitary gland**.

### Summary of Steps:
1. Understand the question about hormone storage.
2. Analyze each option based on their functions.
3. Identify the correct gland known for hormone storage.