Physiology 1.29.13 Absorption Sackin Flashcards
1
Q
What are the three levels of speacialziatio of intestinal mucosa that inrease surface area
A
1 .Folds of Kerkring (3x)
- Intestinal Villi (10x)
- Microvilli (20x)
2
Q
What is the function of Cryts od Lieberkuhn
A
contrbute to total surface area but NOT absorption
3
Q
What is abosrption perfoemed by
A
columnar abosrptive cells coveing the billi
4
Q
what are the role of cells int eh begining of life in cryps
A
may be secretory cells or specialized cells (paneth cells, goblet cells, endocrine)
5
Q
What do secretory cells do in 2-3 days? what do they beocme?
A
they migrate up to villus to become absorptive columanr cells
6
Q
What happens to goblet and endorine cells
A
beocme columnar but retain original finction.
7
Q
what happens to Paneth cells
A
they migrate and remain in crypts
Probably involved in limiting bacterial growth in SI
