Epithelium histology

Question 1

Stratified epithelium is named according to the shape of the cells on which surface, basal or apical?

Answer 1

Apical

Question 2

What is the shape of the sweat glands?

Answer 2

Simple coiled tubular

Question 3

Starting from superficial (apical membrane) and moving towards the basal membrane, what are the 4 main types of cell connections between adjacent epithelial cells?

Answer 3

Tight junctions
Adherens junctions
Desmosomes
Gap junctions

Question 4

What is the function of adherens junctions?

Answer 4

Contain cadherins which link to actin filaments which form part of the cell cytoskeleton

Question 5

What is the function of desmosomes?

Answer 5

Form spot connections between cells - cadherins link to keratin via attachment plaques

Question 6

What is the function of gap junctions?

Answer 6

Connexons allow movements of ions and solutes between cells

Question 7

What is the function of tight junctions?

Answer 7

Prevent the paracellular transport of water