Small Intestine (19)

Question 1

How long is the small intestine? diameter?

Answer 1

3m, 2.5cm

Question 2

3 parts of small intestine

Answer 2

duodenum, jejunum, ileum

Question 3

Absorptive cells function

Answer 3

absorb nutrients

Question 4

Goblet cell function

Answer 4

secretes mucus

Question 5

Enteroendocrine cell function

Answer 5

secretes the hormones secretin, cholecystokinin

Question 6

Paneth cell function

Answer 6

secretes lysozyme and is capable of phagocytosis

Question 7

Carbohydrate-digesting enzymes

Answer 7

α-dextrinase, maltase, sucrase, lactase

Question 8

Protein-digesting enzymes

Answer 8

aminopeptidase, dipeptidase

Question 9

Nucleotide-digesting enzymes

Answer 9

nucleosidases, phosphatases

Question 10

What is segmentation

Answer 10

local mixing of chyme with intestinal juices -swishing back & forth

Question 11

Chyme remains in small intestine for how long?

Answer 11

3-5 hours

Question 12

90% of absorption occurs in

Answer 12

small intestine

Question 13

How many L fluid dumped into GI tract each day?

Answer 13

9L

Question 14

How many L fluid reabsorbed by small intestine?

Answer 14

8L, 90% of 9th L absorbed by large intestine

Question 15

Small intestine absorption is done through…

Answer 15

osmosis through cell walls into vascular capillaries inside villi