The Digestive System

Question 1

Position wise: how is the belly’s organs placed?

Answer 1

Liver on top left, stomach in middle, gall bladder is tiny under the liver in the left, and pancreas is at the bottom

Question 2

what are those things at the back of our mouth? Function

Answer 2

salivary glands; produce amylase

Question 3

whats that thing running through the large intestine? Function

Answer 3

colon; absorbs water into blood

Question 4

Whats the thing at the end of the large intestine, but before the anus? Function

Answer 4

rectum ; store faeces

Question 5

Whats the tube from the throat called? Function

Answer 5

oesophagus ; carries food to stomach

Question 6

Function of mouth

Answer 6

take in food and chew it

Question 7

function of liver

Answer 7

produce liquid bile to help digest fat, sends it to gall bladder
regulate amount of each food in the blood

Question 8

function of stomach

Answer 8

churn food, adding hydrochloric acid to it. Now called chyme

Question 9

gall bladder function

Answer 9

store bile

Question 10

pancreas function

Answer 10

produce enzymes to break down nutrients

Question 11

anus function

Answer 11

allow faces to pass out of body

Question 12

system definition

Answer 12

A group of organs working together

Question 13

digestion definition

Answer 13

The breaking down of larger food particles into smaller food particles

Question 14

Why is the digestive system necessary?

Answer 14

Blood needs nutrients to carry around the body to different organs; large food particles cannot be absorbed by blood, therefore digestion

Question 15

what are the 5 steps of digestion

Answer 15

ingestion , digestion, absorption, assimilation (food is used by the body) egestion

Question 16

what are four groups of teeth and their functions

Answer 16

Incisors- cut and slice food
canines- grip and tear food
premolars and molars - chew and grind food

Question 17

enzyme definition

Answer 17

a chemical found in living organisms that speed up chemical reactions

Question 18

amylase function

Answer 18

an enzyme; breaks down starch to sugar maltose

Question 19

substrate definition

Answer 19

the name of the substance on which an enzyme acts eg starch

Question 20

product definition

Answer 20

the name of the substance that is formed when an enzyme reacts with a substrate

Question 21

experiment to investigate the digestion of starch by amylase?

Answer 21

two test tubes in a bath of 37C water, the control with starch and water and the test with starch and amylase.left for 5 mins. put a sample from each tube onto a spotting plate and test with iodine.

Question 22

function of bile duct in the gall bladder?

Answer 22

sends bile to the small intestine

Question 23

how does the digestive and circulatory system interact?

Answer 23

a large blood supply to the organs of the digestive system to absorb nutrients into food