HISTOLOGY Lecture 2 – Epithelial Tissue (Cont’d)

Question 1

What is epithelial polarity?

Answer 1

Epithelial cells have an apical surface (facing lumen) and a basal surface (attached to basement membrane).

Question 2

Functions of epithelial tissues?

Answer 2

Protection, secretion, absorption, excretion, transport, sensory.

Question 3

Where is simple squamous epithelium found?

Answer 3

Lining of blood vessels (endothelium), lungs, and heart cavities.

Question 4

What is the function of goblet cells?

Answer 4

Mucus secretion in columnar epithelium.

Question 5

Difference between exocrine and endocrine glands?

Answer 5

Exocrine secrete via ducts; endocrine secrete hormones into bloodstream.

Question 6

Name a stratified epithelium and its function.

Answer 6

Stratified squamous epithelium – protects from abrasion and water loss.