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digestive system part 2

digestive system part 2

21問 • 2年前

問題一覧

1

-involuntary alternating waves of contraction and relaxation of the longitudinal muscles in the organ wall to move food along the tract (e.g. swallowing)

Peristalsis

2

It is the process of physically fragmenting food into smaller particles and preparing food for further degradation by enzymes Examples of mechanical breakdown are mastication or chewing of food and churning or mixing of food in the stomach

FOOD BREAKDOWN: MECHANICAL BREAKDOWN

3

process where the small intestine moves food back and forth, mixing it with digestive juices

Segmentation

4

The sequence of steps in which large food molecules are chemically broken down to their building blocks by enzymes.

FOOD BREAKDOWN: DIGESTION

5

Organic food molecules:

Monosaccharides or simple sugars (glucose, fructose, galactose) Disaccharides or carbohydrates (sucrose, lactose, maltose, and starch) Protains Lipids (fats)

6

-stimulates release of gastric juice

Gastrin

7

-inhibits secretion of gastric and pancreatic juices

Somastatin

8

-increases pancreatic juice and bile output

Secretin

9

) - stimulates gallbladder to expel stored bile

Cholecystikinin (CKK

10

hormone in digestion

Gastrin-stimulates release of gastric juice Somastatin-inhibits secretion of gastric and pancreatic juices Secretin-increases pancreatic juice and bile output Cholecystikinin (CKK) - stimulates gallbladder to expel stored bile

11

It is the transport of digestive and products from the lumen of the Gl tract to the blood or lymph

ABSORPTION

12

The process of chemical digestion is accelerated as the food now takes ___ hour journey through the looping coils and twists of the small intestine until digestion and absorption of all nutrients is completed.

3-6

13

The__ is the major absorptive site

small intestine

14

Absorption by the _____s limited to the absorption of vit. K and B, some ions, and most of the remaining water

large intestine i

15

It is the elimination of indigestible residues from the Gl tract via anus in the form of feces

defaction

16

slow segmenting movement. in the colon, lasting about 1 minute that occur every 30 minutes or so; propel and mix residue

Haustral contractions-

17

-long, slow-moving but powerful contractile waves that move over large areas of the colon three or four times daily and force the contents toward the rectum

Mass movements

18

__ increases the strength of colon contractions and softens the stool

Fiber

19

-a response of the rectum when it is stretched due to presence of feces pushed via mass movements It causes the walls of the sigmoid colon and the rectum to contract and the anal sphincters to relax

DEFECATION REFLEX

20

result from any condition that rushes food residue through the large intestine before that organ has had sufficient time to absorb the water (as in irritation of the colon by bacteria)

Diarrhea

21

__ If food residue remains in the large intestine for extended periods, too much water is absorbed, and the stool becomes hard and difficult to pass

Constipation

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問題一覧

1

-involuntary alternating waves of contraction and relaxation of the longitudinal muscles in the organ wall to move food along the tract (e.g. swallowing)

Peristalsis

2

It is the process of physically fragmenting food into smaller particles and preparing food for further degradation by enzymes Examples of mechanical breakdown are mastication or chewing of food and churning or mixing of food in the stomach

FOOD BREAKDOWN: MECHANICAL BREAKDOWN

3

process where the small intestine moves food back and forth, mixing it with digestive juices

Segmentation

4

The sequence of steps in which large food molecules are chemically broken down to their building blocks by enzymes.

FOOD BREAKDOWN: DIGESTION

5

Organic food molecules:

Monosaccharides or simple sugars (glucose, fructose, galactose) Disaccharides or carbohydrates (sucrose, lactose, maltose, and starch) Protains Lipids (fats)

6

-stimulates release of gastric juice

Gastrin

7

-inhibits secretion of gastric and pancreatic juices

Somastatin

8

-increases pancreatic juice and bile output

Secretin

9

) - stimulates gallbladder to expel stored bile

Cholecystikinin (CKK

10

hormone in digestion

Gastrin-stimulates release of gastric juice Somastatin-inhibits secretion of gastric and pancreatic juices Secretin-increases pancreatic juice and bile output Cholecystikinin (CKK) - stimulates gallbladder to expel stored bile

11

It is the transport of digestive and products from the lumen of the Gl tract to the blood or lymph

ABSORPTION

12

The process of chemical digestion is accelerated as the food now takes ___ hour journey through the looping coils and twists of the small intestine until digestion and absorption of all nutrients is completed.

3-6

13

The__ is the major absorptive site

small intestine

14

Absorption by the _____s limited to the absorption of vit. K and B, some ions, and most of the remaining water

large intestine i

15

It is the elimination of indigestible residues from the Gl tract via anus in the form of feces

defaction

16

slow segmenting movement. in the colon, lasting about 1 minute that occur every 30 minutes or so; propel and mix residue

Haustral contractions-

17

-long, slow-moving but powerful contractile waves that move over large areas of the colon three or four times daily and force the contents toward the rectum

Mass movements

18

__ increases the strength of colon contractions and softens the stool

Fiber

19

-a response of the rectum when it is stretched due to presence of feces pushed via mass movements It causes the walls of the sigmoid colon and the rectum to contract and the anal sphincters to relax

DEFECATION REFLEX

20

result from any condition that rushes food residue through the large intestine before that organ has had sufficient time to absorb the water (as in irritation of the colon by bacteria)

Diarrhea

21

__ If food residue remains in the large intestine for extended periods, too much water is absorbed, and the stool becomes hard and difficult to pass

Constipation