In cilia the central tubules are connected by (A)____ and is also enclosed by a (B)____, which is connected to oen of tubule of each peripheral doublet by a (C)_____

Answer

To answer the question regarding the structure of cilia, we need to fill in the blanks based on the information provided in the video transcript.

### Step-by-Step Solution:

1. **Understanding Cilia Structure**:
- Cilia are hair-like projections found on the surface of some cells, including bacteria. They play a crucial role in locomotion.

2. **Identifying the Central Tubules**:
- In cilia, there are central microtubules that are essential for their structure.

3. **Filling in Blank (A)**:
- The central tubules are connected by a structure known as the **central bridge**.
- **Answer for (A)**: Central bridge.

4. **Filling in Blank (B)**:
- The central tubules are enclosed by a structure called the **central sheath**.
- **Answer for (B)**: Central sheath.

5. **Filling in Blank (C)**:
- The central sheath is connected to one of the tubules of each peripheral doublet by a structure known as the **radial spoke**.
- **Answer for (C)**: Radial spoke.

### Final Answers:
- (A) Central bridge
- (B) Central sheath
- (C) Radial spoke