The Digestive System

Question 1

Stages of Nutrition: Getting Energy From Our Food

Answer 1

~ Ingestion/eating
~ Digestion
~ Absorption
~ Assimilation
~ Elimination

Question 2

Ingestion/Eating

Answer 2

~ Food is taken in by the body

Question 3

Digestion

Answer 3

~ Food is broken down

Question 4

Absorption

Answer 4

~ Digested food passes into the bloodstream

Question 5

Assimilation

Answer 5

~ Using the food in the cells of the body

Question 6

Elimination

Answer 6

~ Getting rid of undigested food

Question 7

Physical Digestion

Answer 7

~ Taking large pieces of food and breaking them down into smaller pieces

Question 8

Chemical Digestion

Answer 8

~ Involves the use of chemicals called enzymes to break down food

Question 9

Enzymes

Answer 9

~ Enzymes are chemicals that speed up reactions without being used up in the reaction

Question 10

How Enzymes Work

Answer 10

~ Enzymes act on a substrate and breaks it down into a product e.g.
~ substrate = starch,
~ enzymes= amylase (saliva),
~ product = maltose (sugar)

Question 11

Most Chemical Digestion Happens In

Answer 11

~ Small intestine

Question 12

Bile

Answer 12

~ Made in liver to break down fats

Question 13

Pancreas Makes

Answer 13

~ Digestive juices which contain enzymes

Question 14

Incisors

Answer 14

~ At the front of the mouth
~ 4 upper and 4 lower
~ Used for biting and cutting food

Question 15

Canine

Answer 15

~ One at either side of the incisors
~ 2 upper and 2 lower
~ Grasp and tear food

Question 16

Pre-molars

Answer 16

~ 3 at either side of canine
~ 6 upper and 6 lower
~ Grind and crush food

Question 17

Molars

Answer 17

~ 2 at either side of premolars
~ 4 upper and 4 lower
~ Grind and crush food

Question 18

Herbivore

Answer 18

~ Only eats plants
~ Very large incisors
~ Large molars and pre-molars to chew grass

Question 19

Carnivore

Answer 19

~ Only eat meat
~ Large canine teeth
~ Use the teeth to catch and tear their prey

Question 20

Omnivore

Answer 20

~ Eats plants and meat
~ Need all of the teeth