Ch.3 Flashcards Preview

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Flashcards in Ch.3 Deck (24):
1

organs of GI tract

mouth
Pharynx
esophagus
stomach
small intestine
large intestine
rectum

2

Accessory organs

salivary glands
liver
gallbladder
pancreas

3

Mouth
ingestion

GI tract
food enters GI tract

4

Mouth
Mechanical dijestion

GI tract
Mastication tears, shreds, and mixes food with saliva

5

mouth
Chem digestion

GI tract
Salivary amylase &lingual lipase-> carb and lipid digestion

6

Pharynx

GI tract
directs food from mouth to esophagus

7

Esophagus
Propulsion

GI tract
swallowing and peristalsis move food from mouth to stomach

8

Stomach
Mechanical digestion

GI tract
mixes and churns food with gastric J. into liquid->chyme

9

Stomach
chemical digestion

GI tract
Pepsin begins digestion of prtns
gastric lipase break lipids up

10

Stomach
absobtion

GI tract
Few fat sol. subs. absorved

11

Small intestine
Mechanical digestion & propulsion

GI tract
mixes chyme with digestive juices
peristaltic waves move it along tract

12

Small intestine
Chemical digestion

Gi tract
digestive enzymes from pancreas and brush borders digest most nutrients

13

small intestine
absorption

GI tract
nutrients absorbed into blood and lymph through enterocytes

14

small intestine

GI tract
most of the absorption of nutrients occurs

15

Large intestine
chemical digestion

GI tract
Some remaining food digested by bacteria

16

Large intestine
Absorption

GI tract
salts, water, and vitamins

17

Large intestine
Propulsion

GI tract
waste into feces and propels it toward rectum

18

Rectum
elimination

GI tract
temp. stores feces before voluntary release through anus

19

Accessory organs

GI tract
Salivary glands
Liver
Gallbladder
Pancreas

20

Salivary glands

GI tract accessory organ
Produces saliva
-mixture of mucus enzymes and chem.

21

Liver

GI tract accessory organ
Produces bile to emulsify fats

22

Gallbladder

GI tract accessory organ
Stores bile before its release to small int. through bile duct

23

Pancreas

GI tract accessory organ
Prod. dige. enzyme & bicarbonate
-released into smll int. via pancreatic duct

24

Appendix

houses bacteria and lymph cells