2.5 The Digestive System

Question 0

Which digestive juice is produced in the salivary glands?

Answer 0

saliva containing amylase

Question 1

What is digestion?

Answer 1

breakdown of large insoluble food into small soluble food to allow absorption into the blood stream through small intestine wall

Question 2

Which digestive juice is produced in the stomach?

Answer 2

Gastric juices containing pepsin, acid and mucus

Question 3

which enzymes are produced in the pancreas?

Answer 3

amylase, trypsin, lipase

Question 4

which digestive juice is produced in the liver?

Answer 4

bile which breaks up fat into smaller pieces

Question 5

which digestive juices are produced in the small intestine?

Answer 5

lipase

Question 6

how does peristalsis work?

Answer 6

circular muscles in front or below relax

circular muscles behind or above it contract

Question 7

Discuss muscle contractions in the stomach…

Answer 7

circular muscles contract -stomach long and thin

longitudinal muscles contrat-stomach short and wide

Question 8

which enzyme breaks up starch and into what?

Answer 8

amylase breaks starch into maltose

Question 9

which enzyme breaks up protein and into what?

Answer 9

pepsin breaks protein into amino acids

Question 10

which enzyme breaks up fats and into what?

Answer 10

lipase breaks fat into fatty acids and glycerol

Question 11

how is the structure of the small intestine related to its function?

Answer 11

folded lining-large surface area- good absorption
villi-large surface area - good absorption
thin walls- good absorption
good blood supply- glucose absorption
lacteals-fatty acids and glycerol absorption

Question 12

which structures inside villi absorb and what do the absorb?

Answer 12

glucose and amino acids absorbed through blood capillaries

fatty acids and glycerol absorbed by lacteals

Question 13

what is the role of the lacteal?

Answer 13

carries glycerol and fatty acids to lymphatic vessel