lesson 1 the digestive system

Question 1

what is a tissue

Answer 1

a group of cells with a similar structure and function

Question 2

what’s an organ

Answer 2

a group of tissues working together for a specific function

(eg stomach)

Question 3

the stomach contains what

Answer 3

muscle tissue and glandular tissue which releases enzymes

Question 4

organs are grouped into what

Answer 4

organ systems

Question 5

what do organ systems do

Answer 5

work together to form organisms

Question 6

food contains which 3 main nutrients

Answer 6

carbohydrates (eg starch)
protein
lipids (fats)

Question 7

carbohydrates, protein and lipids are all what

Answer 7

large molecules and are too large to be absorbed into the bloodstreamed

Question 8

as carbohydrates, protein and lipids are too large to be absorbed into the bloodstream, what has to be done

Answer 8

they have to be digested

Question 9

during digestion, what occurs

Answer 9

large food molecules are broken down into small molecules by enzymes

Question 10

the small molecules during digestion can be absorbed where

Answer 10

into the bloodstream

Question 11

in the digestive system, first food is chewed where

Answer 11

in the mouth

Question 12

in the digestive system, after food is chewed in the mouth, what occurs

Answer 12

enzymes in the saliva begin to digest the starch into smaller sugar molecules

Question 13

in the digestive system, after the food is chewed the food then passes down where

Answer 13

the oesophagus into the stomach

Question 14

in the digestive system, in the stomach, what occurs

Answer 14

enzymes begin the digestion of proteins

Question 15

in the digestive system, the stomach also contains what

Answer 15

hydrochloric acid which helps the enzymes to digest proteins

Question 16

in the digestive system, the food spends how long in the stomach

Answer 16

several hours

Question 17

in the digestive system, the churning action of the stomach muscles turns the food into what

Answer 17

a fluid, increasing the surface area for enzymes to digest

Question 18

in the digestive system, the fluid then passes into where

Answer 18

the small intestine

Question 19

in the digestive system, where are chemicals released into the small intestine

Answer 19

from the liver and pancreas

Question 20

in the digestive system, what does the pancreas do

Answer 20

releases enzymes which continue the digestion of starch and proten

Question 21

in the digestive system, the pancreas also does what

Answer 21

starts the digestion of lipids

Question 22

in the digestive system, the liver releases what

Answer 22

bile which helps to speed up the digestion of lipids

Question 23

in the digestive system, bile also does what

Answer 23

it neutralises the acid released from the stomach

Question 24

in the digestive system, the walls of the small intestine do what

Answer 24

release enzymes to continue the digestion of protein and lipids

Question 25

in the digestive system, in the small intestine, the small food molecules produced by digestion are what

Answer 25

absorbed into the bloodstream, by either diffusion or active transport

Question 26

in the digestive system, after the fluid is finished in the small intestine, it then makes its way where

Answer 26

through the large intestine,

Question 27

in the digestive system, what is the large intesine

Answer 27

where water is absorbed into the bloodstream

Question 28

in the digestive system, the faeces is what

Answer 28

released from the body

Question 29

the products of digestion are absorbed where

Answer 29

into the bloodstream

Question 30

the products of digestion are then used by the body to build what

Answer 30

new carbohydrates, lipids and proteins

Question 31

glucose produced is used where

Answer 31

in respiration