The tube which joins pharynx with the middle ear possesses

Options

A. Hyaline cartilage
B. Bone
C. Elastic cartilage
D. Fibrocartilage

Answer

**Step-by-Step Solution:**

1. **Identify the Tube**: The question asks about the tube that connects the pharynx to the middle ear. This tube is known as the Eustachian tube.

2. **Composition of the Eustachian Tube**: The Eustachian tube is primarily composed of Yellow Fibrocartilage, which is also referred to as Elastic Cartilage.

3. **Characteristics of Elastic Cartilage**: Elastic Cartilage contains a dense network of elastic fibers. These fibers are scattered between the cartilage cells (chondrocytes), providing the Eustachian tube with elasticity and pliability.

4. **Evaluate the Options**:
- **Option 1: Hyaline Cartilage** - This is incorrect as the Eustachian tube does not contain hyaline cartilage.
- **Option 2: Bone** - This is also incorrect as the Eustachian tube is not made of bone.
- **Option 3: Elastic Cartilage** - This is correct as the Eustachian tube is made up of elastic cartilage (Yellow Fibrocartilage).
- **Option 4: Fibrocartilage** - This is incorrect since the Eustachian tube does not consist of fibrocartilage.

5. **Conclusion**: The correct answer is that the tube which joins the pharynx with the middle ear possesses Elastic Cartilage.

**Final Answer**: The Eustachian tube possesses Elastic Cartilage.

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