macronutrients - fats

Question 1

Digestion 1. Mouth (l.l)

Answer 1

• lingual lipase released by saliva (doesn’t begin working until it reaches the stomach)

Question 2

Digestion 2: lipases in the stomach

Answer 2

• acid in stomach activates lingual lipase
• joined by gastric lipase released in the stomach

Question 3

Digestion 3: Small intestine

Answer 3

• Bile mixes with chyme here
• bile facilitates digestion by acting as an emulsifier

Question 4

Absorption 1: Small intestine

Answer 4

fatty acids and glycerol are absorbed into the villi and mix w/ lymphatic fluid
- move around body in lymphatic system and join blood circulation as insoluble fats

Question 5

Absorption 2: role of liver

Answer 5

liver converts insoluble fats into soluble ones

Question 6

Utilisation

Answer 6

• insulation/ protect vital organs
• transport fat soluble vitamins