Adrenal gland is derived from

Options

A. Ectoderm
B. Mesoderm
C. Ectoderm and mesoderm
D. Ectoderm and endoderm

Answer

To determine the origin of the adrenal gland, we need to understand the germ layers involved in its development. Here’s a step-by-step solution:

### Step 1: Understand Germ Layers
The human body is developed from three primary germ layers during embryonic development:
- **Ectoderm**: The outermost layer.
- **Mesoderm**: The middle layer.
- **Endoderm**: The innermost layer.

### Step 2: Identify the Structure of the Adrenal Gland
The adrenal gland consists of two main parts:
- **Adrenal Cortex**: The outer part of the adrenal gland.
- **Adrenal Medulla**: The inner part of the adrenal gland.

### Step 3: Determine the Origin of Each Part
- **Adrenal Cortex**: This part is derived from the **mesoderm**.
- **Adrenal Medulla**: This part is derived from the **ectoderm**.

### Step 4: Combine the Origins
Since the adrenal gland consists of both the adrenal cortex and adrenal medulla, it is derived from both the ectoderm and mesoderm.

### Final Answer
The adrenal gland is derived from **ectoderm and mesoderm**.

---