HUMAN ALIMENTARY CANAL

Question 1

MOUTH

Answer 1

• where mechanical digestion takes place
• large food is turned into a food bolus with larger surface area to volume ratio so enzymes in saliva called amylase, can break down starch into glucose
• food bolis lubricated with saliva so it can be swallowed easily

Question 2

OESOPHAGUS

Answer 2

• tube that connects the mouth to the stomach
• where food bonus go after being swallowed
• peristalsis

Question 3

STOMACH

Answer 3

• where food is churned mechanically while enzymes do so chemically
• hydrochloric acid will be present to allow optimum pH so increases enzyme activity and the rate of metabolic reactions

Question 4

SMALL INTESTINE

Answer 4

• lined with villi to absorb digested soluble molecules into the circulatory system for use

Question 5

LARGE INTESTINE

Answer 5

• water is absorbed from undigested food to produce faeces ( stored in the rectum and removed through the anus )

Question 6

PANCREAS

Answer 6

• produce enzymes; amylase, protease and lipase

- secretes enzymes up into the stomach and small intestine for digestion