The epithelium of respiratory bronchioles is `:-`
(a) Simple cuboidal
(b) Pseudostratified columnar
(c) Simple squamous
(d) Pseudostratified sensory

Options

A. Simple cuboidal
B. Pseudostratified columnar
C. Simple squamous
D. Pseudostratified sensory

Answer

To determine the type of epithelium found in respiratory bronchioles, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure**: Recognize that respiratory bronchioles are part of the respiratory system and serve as passages for air to flow from the bronchi to the alveoli in the lungs.

2. **Identify the Characteristics of Bronchioles**: Note that bronchioles are smaller branches of the bronchi, typically less than 1 mm in diameter.

3. **Examine the Epithelial Types**: Consider the options provided:
- (a) Simple cuboidal
- (b) Pseudostratified columnar
- (c) Simple squamous
- (d) Pseudostratified sensory

4. **Recall the Epithelium in Bronchioles**: Understand that the walls of bronchioles are primarily made up of ciliated or non-ciliated cuboidal epithelium. This is a key characteristic of respiratory bronchioles.

5. **Select the Correct Option**: Since the epithelium of respiratory bronchioles is described as cuboidal, the correct answer is:
- **(a) Simple cuboidal**

### Final Answer:
The epithelium of respiratory bronchioles is **(a) Simple cuboidal**.

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