Epithelium of Retina & Thyroid is made up of which type of cells : -

Options

A. Squamous + Cuboidal
B. Columner + Cuboidal
C. Columner + squamous
D. Only Cuboidal

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the type of cells that make up the epithelium of the retina and thyroid gland.

2. **Identifying the Epithelium of the Retina**: The epithelium of the retina, specifically the retinal pigment epithelium, is composed of simple cuboidal cells. These cells form a single layer and have centrally located nuclei. Their primary functions include acting as a selective barrier and regulating the overlying photoreceptor layer.

3. **Identifying the Epithelium of the Thyroid**: The thyroid gland is also lined by simple cuboidal epithelium. The cells in the thyroid are often referred to as follicular cells, which are responsible for the production and secretion of thyroid hormones. These cells are arranged in spherical structures called follicles.

4. **Conclusion**: Both the epithelium of the retina and the thyroid gland are made up of simple cuboidal cells.

5. **Final Answer**: The epithelium of the retina and thyroid is made up of **simple cuboidal cells**.