Small intestine kura cloud

Question 1

How long is the small intestine

Answer 1

6m

Question 2

Types of cells in the small intestine?

Answer 2

Enterocytes:
tall columnar epithelia with microvilli on the apical surface.
They are connected to each other by tight junctions

Goblet cells:
apical part of the cytosol is packed with mucin granules, which distorts the shape of the cell

Mucous consists of water and glycoproteins, and serves as a lubricant to facilitate gut passage.

Enteroendocrine cells:
Their sensory apparatus is in the apical portion.

Question 3

what other functions does the enterocyte have?

Answer 3

the most abundant intestinal epithelial cell is responsible for chemical breakdown of nutrients.

Question 4

how do goblet cells secrete mucous

Answer 4

Goblet cells secrete mucous by exocytosing granules

Question 5

where are the mucosal folds closer together?

Answer 5

Closer in the jejunum compared with the duodenum

Question 6

Describe the absorption of galactose in the small intestine?

Answer 6

Galactose is absorbed into the bloodstream via enterocytes. Like glucose, it is absorbed through the apical membrane via SGLT-1 transporter, concurrently with a sodium ion. Galactose, is then absorbed through the basolateral membrane via GLUT-2 through facilitated diffusion