The cellular junctions that join the epithelium cells to the basal lamina are

Options

A. Desmosomes
B. Hemidesmosomes
C. Interdigitations
D. Tight Junctions

Answer

To solve the question regarding the cellular junctions that join the epithelium cells to the basal lamina, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Epithelial Tissue**:
- Epithelial tissues are composed of tightly packed cells that form a protective layer over organs and body surfaces. They are anchored to a layer called the basal lamina or basement membrane.

2. **Identify the Role of Cellular Junctions**:
- Cellular junctions are specialized structures that connect cells to each other or to the extracellular matrix (in this case, the basal lamina). We need to focus on junctions that connect epithelial cells to the basal lamina rather than those that connect epithelial cells to each other.

3. **Differentiate Between Types of Junctions**:
- There are various types of cellular junctions, such as tight junctions, desmosomes, and hemi-desmosomes.
- Tight junctions prevent leakage between cells, desmosomes provide adhesion between cells, and hemi-desmosomes anchor cells to the basal lamina.

4. **Focus on the Relevant Junction**:
- Since the question specifically asks about the junction that connects epithelial cells to the basal lamina, we need to identify the correct type of junction.
- Hemi-desmosomes are specifically designed to anchor epithelial cells to the basal lamina, unlike desmosomes which connect cells to each other.

5. **Conclude with the Correct Answer**:
- Based on the above analysis, the cellular junction that joins epithelial cells to the basal lamina is **hemi-desmosomes**.

### Final Answer:
The cellular junctions that join the epithelium cells to the basal lamina are **hemi-desmosomes**.

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