Epithelial Tissue :)

Question 1

What is epithelial tissue?

Answer 1

Tissue that lines body surfaces and cavities and protects underlying structures.

Question 2

What are functions of epithelial tissue?

Answer 2

Secretion, absorption, filtration, and excretion. (SAFE)

Question 3

When classifying epithelial tissue, it can be classified according to cell type. What are these classifications?

Answer 3

They can be:
Squamous - meaning outer cells are flattened
Cuboidal - meaning outer cells are cubed shaped
Culumnar - meaning outer cells are rectangular

Question 4

When classifying epithelial tissue, it can be classified according to the number of layers in the tissue. What are these classifications?

Answer 4

They can be:
Simple - meaning single layered
Stratified - meaning they have multiple layers
Pseudostratified - meaning they appear to be layered but is not

Question 5

What is a basement membrane?

Answer 5

A basement membrane reinforces the epithelial sheet and helps it resist stretching and tearing forces.
It also defines the boundary between epithelial cells and underlying connective tissue.

Question 6

What is a basement membrane composed of?

Answer 6

Basal lamina - which is secreted by epithelial cells

Reticular lamina - which belongs to underlying connective tissue