Macronutrient locations of Chemical Digestion

Question 1

Carbohydrates ( Amylase )

Answer 1

• Released from salivary glands and pancreatic amylase
• in small intestines

Question 2

Fats ( Lipase & Bile Salts

Answer 2

• Bile - released from liver and gallbladder
• Lipase - from pancreas
• Digestion in small intestines

Question 3

Proteins (Proteases, Pepsin

Answer 3

• Proteases - produced in stomach and pancreas
• Proteins - digested in mouth, stomach and small intestines
• Pepsin - produced by chief cells

Question 4

How are micronutrients absorbed out of the GI lumen ?

Answer 4

• absorbed by lumen into the blood stream
• Through a series of complex processes in the small intestine

Question 5

Describe the Absorption of Carbohydrates

Answer 5

• Salivary Amylase digest POLYSACCHARIDES in mouth
• Pancreatic Amylase digests POLYSACCHARIDES and DISACCHARIDES after food moved to small intestines
• Disaccharidases digest disaccharides into MONOSACCHARIDES
• Transported across bush border membrane
• Into enterocytes before crossing basolateral membrane
• entering capillaries

Question 6

How Haustral Pouches are formed in Large Intestine

Answer 6

• Unique arrangement of colon muscular layers
• large intestine has taeniac coil
• these are shorter than overall length of colon
• disparity causes colon to bunch up and forms sac like bulges
• these are haustia