lecture 5 - Digetsive Tract

Question 1

Digestion tract order

Answer 1

Mouth, Esophagus, Stomach, Small intestine, Large intestine, Rectum, Anus

Question 2

Mouth function

Answer 2

Ingestion, chewing food to smaller pieces, salivary glands secrete amylase (breaks down carbohydrates)

Question 3

Esophagus Function

Answer 3

Tube that carries food/liquid to stomach

Question 4

Stomach Function

Answer 4

Physical, Chemical digestion, gastrin (hormone)released when food reaches stomach, stomach breaks down proteins (HCL,pepsin) (HCI activates pepsin, stops amylase) (Epithelial cells producing mucus prevent stomach from digesting itself)

Question 5

Gastrointestinal tract (muscles)

Answer 5

GI tract Ranged with inner circular and outer longitudinal muscle, Peristalsis (wave-like motion) moves bolus of food through digestive tract, and sphincters control movement from one section to another

Question 6

Large intestine function

Answer 6

Reabsorption of water & minerals, formation &storage of faeces (bacterial fermentation of indigestible materials, eg. fibre)

Question 7

Rectum/Anus function

Answer 7

Control excretion of solid waste (Rectum stores,Anus controls release)

Question 8

Prebiotic

Answer 8

Foods (high fibre) act as food for human microflora, Probiotic →Live microorganisms intended to maintain or improve good bacteria (normal microflora) in the body

Question 9

Liver & Gall bladder

Answer 9

Liver produces and pancreas store bile, released for help with digestion of fat into fatty acids

Question 10

Pancreas

Answer 10

Regulates blood sugar levels