Question

for review

1. label the tissue types illustrated here and on the next page, and

(a)

Explanation:

🆕 New Concept Discovered: Epithelial Tissue Classification
Identifying tissues by cell shape and layers.

Step 1: Analyze the overall tissue structure (a)

To identify the main tissue type shown in diagram (a), we look at the organization of the cells.

• There is a prominent layer of tall, column-like cells lined up side-by-side.
• These cells have elongated nuclei located near the base of the cells.
• This single layer of tall cells is characteristic of simple columnar epithelium.

Step 2: Identify the specific labeled structures

Let's identify the three pointer lines from top to bottom:

1. Top pointer: Points to the underlying connective tissue layer beneath the basement membrane (specifically, the connective tissue or lamina propria containing fibroblasts and extracellular fibers).
2. Middle pointer: Points directly to a single, tall column-shaped cell, which is a simple columnar epithelial cell (or its nucleus / cytoplasm).
3. Bottom pointer: Points to the thin boundary line at the base of the epithelial cells, which is the basement membrane.

Answer:

• Overall Tissue Type (a): Simple columnar epithelium
• Top label: Connective tissue (or Lamina propria)
• Middle label: Simple columnar epithelial cell (or Nucleus of columnar cell)
• Bottom label: Basement membrane