The correct sequence of layers found in the walls of arteris from inside to outward is `:-`

Options

A. Tunica adventitia , tunica interna & tunica media
B. Tunica interna, tunica externa & tunica media
C. Tunica interna, tunica media & tunica externa
D. Tunica media, tunica externa & tunica interna

Answer

To determine the correct sequence of layers found in the walls of arteries from inside to outward, we can follow these steps:

### Step 1: Identify the Layers of Arterial Walls
Arterial walls consist of three main layers:
1. **Tunica Interna (or Endothelium)**: This is the innermost layer, which is in direct contact with the blood flow. It is made up of a single layer of squamous epithelial cells and is elastic in nature.
2. **Tunica Media**: This is the middle layer, composed primarily of smooth muscle and elastic fibers. It is thicker in arteries than in veins, allowing arteries to handle higher pressure.
3. **Tunica Externa (or Adventitia)**: This is the outermost layer, which provides structural support and protection. It is made up of connective tissue.

### Step 2: Arrange the Layers from Inside to Outside
Based on the identification of the layers, we can arrange them in the correct order from the innermost to the outermost:
- **Tunica Interna**
- **Tunica Media**
- **Tunica Externa**

### Final Answer
The correct sequence of layers found in the walls of arteries from inside to outward is:
**Tunica Interna, Tunica Media, Tunica Externa.**

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