Histology of Connective Tissue

Question 1

What are the different types of connective tissue and what differentiates them

Answer 1

Loose connective tissue = flexible, well vascularized
Dense irregular = resistant to stress from all directions
Dense regular = definitive pattern due to prolonged stress in 1 direction. White and inextensible
Elastin reduces and collagen increases from loose to dense

Question 2

What is the function of fibroblast and how do they look like

Answer 2

Make ECM. Cigar shaped with elongated, euchromatic nucleus

Question 3

What is the function of mast cells and how do they look like

Answer 3

Respond to allergic reactions. Large oval with small and central nucleus

Question 4

What is the function of macrophages

Answer 4

Move around and phagocytose foreign material

Question 5

What are the different types of adipose tissue

Answer 5

White = unilocular = long term energy storage 
Brown = multilocular = heat production

Question 6

What is collagen

Answer 6

Long and cylindrical
Thick
Great strength
Little elasticity

Question 7

What is reticular fibres

Answer 7

Collagen Type III
Thin and Glylcosylated fibres
Flexible network
Argophillic

Question 8

What is elastin

Answer 8

Made of globular elastin molecules
Thin
Elastic
Formed of sheets with cross linkages

Question 9

What is ground substance

Answer 9

Medium for exchange

Hydrated and viscous (traps pathogen)