the digestive system

Question 1

order of the digestive system

Answer 1

buccal cavity
epiglottis
oesophagus
stomach
small intestine
large intestine
rectum
anus

Question 2

two types of digestion

Answer 2

mechanical
chemical

Question 3

mechanical digestion

Answer 3

teeth break down food into smaller pieces

Question 4

chemical digestion

Answer 4

broken down into smaller pieces by enzymes

Question 5

epiglottis

Answer 5

flap of tissue that sits underneath the tongue in the throat

Question 6

function of the epiglottis

Answer 6

close over the windpipe (trachea) while eating prevent food entering airways

Question 7

oesophagus

Answer 7

foodpipe - muscular tube connects mouth and the stomach

Question 8

function of the oesophagus

Answer 8

when food is swallowed the walls of the oesophagus contract, the food then moves down to stomach

Question 9

function of the stomach

Answer 9

stores and mixes food (churns the food)
strong stomach acid (hydrochloric acid)

Question 10

function of small intestine

Answer 10

food into bloodstream begins
enzymes secreted
bile also secreted = digestion of fats

Question 11

function of the liver

Answer 11

produces bile
bile neutralises hydrochloric acid

Question 12

function of large intestine

Answer 12

only water and waste products left
excess water reabsorbed

Question 13

function of rectum

Answer 13

stores waste products until released

Question 14

function of anus

Answer 14

undigested food passes out as faeces

Question 15

absorption

Answer 15

movement of digested food molecules through intestine wall into blood

Question 16

assimilation

Answer 16

movement of digested food molecules into cells where they are used

Question 17

absorption in small intestine

Answer 17

walls are covered in villi
increases surface area so more nutrients absorbed

minerals and vitamins enter blood through diffusion

Question 18

what does the liver store

Answer 18

glucose as glycogen
fats
fat-soluble vitamins
minerals
iron