Functions of GI tract

Question 1

Describe the basic function of the oral cavity

Answer 1

• receives food
• chews food
• starts digestion

Question 2

Describe the basic function of the salivary glands

Answer 2

-produces saliva & enzymes

Question 3

Describe the basic function of the oesophagus

Answer 3

-swallows food

squamous epithelium, submucous glands

Question 4

Describe the basic function of the stomach

Answer 4

-digests food

Question 5

Describe the basic function of the intestines

Answer 5

• digests food
• absorbs food
• absorbs water
• resists bugs

mucosa - highly folded

• vili have smaller folds
• microvili (SA for absorption)

lamina propia - rich vascular system

contains - endocrine cells, smooth muscle, ganglion cells, interstitial cells of cajal

Question 6

What do parietal cells secrete?

Answer 6

HCL

Question 7

What do chief cells secrete?

Answer 7

Pepsinogen

lipase

Question 8

Describe the basic function of the duodenum

Answer 8

• digests food
• absorbs food
• resists bugs

Question 9

Describe the basic function of the intestines

Answer 9

• digests food
• absorbs food
• resists bugs

Question 10

Describe the basic function of the colon

Answer 10

• digests food
• absorbs food
• resists bugs

Question 11

describe the parts of GI tract

Answer 11

oral cavity, oseophagus, stomach, duodenum, jejunum, ileum, large intestine/colon (ascending, transverse, decesending)