Digestive System

Question 1

Ingestion/eating

Answer 1

Food is taken in by the body.

Question 2

Digestion

Answer 2

Food is broken down.

Question 3

Absorption

Answer 3

Digested food passes into the bloodstream.

Question 4

Assimilation

Answer 4

Using the food in the cells of the body.

Question 5

Elimination

Answer 5

Getting rid of undigested food.

Question 6

Enzymes

Answer 6

Enzymes are chemicals that speed up reactions without being used up in the reaction. Enzymes act on a substrate and breaks down into a product. Example: substrate = starch, enzyme = amylase (saliva), product = maltose (sugar).

Question 7

Most chemical digestion happens in…

Answer 7

Small intestine

Question 8

Bile

Answer 8

Made in liver to break down fat.

Question 9

Pancreas makes

Answer 9

Digestive juices which contain enzymes.

Question 10

Physical digestion

Answer 10

Physical digestion happens in the mouth (teeth) and in the stomach (churning).

Question 11

Mouth

Answer 11

Physical and chemical digestion.

Question 12

Oesophagus

Answer 12

Brings food from mouth to stomach.

Question 13

Liver

Answer 13

Makes bile

Question 14

Stomach

Answer 14

Physical and chemical digestion.

Question 15

Pancreas

Answer 15

Makes digestive juices

Question 16

Small intestine

Answer 16

Most chemical digestion

Question 17

Large intestine

Answer 17

Water reabsorption

Question 18

Rectum

Answer 18

Stores undigested food

Question 19

Anus

Answer 19

Undigested food passes out.

Question 20

Gallbladder

Answer 20

Storage of bile.

Question 21

Incisors

Answer 21

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

Question 22

Canine

Answer 22

Grasp and tear food. One on either side of the incisors. 2 upper and 2 lower.

Question 23

Pre-molar

Answer 23

Grinding and crushing food. 3 at either side of the canine. 6 upper and 6 lower.

Question 24

Molar

Answer 24

Grinding and crushing food. 2 at either side of the premolars. 4 upper and 4 lower. The teeth an animal has depends on what it eats.

Question 25

Herbivore

Answer 25

(Sheep) Only eats plants. Very large incisors. Large molars and pre-molars to chew grass.

Question 26

Carnivore

Answer 26

(Lion) Only eat meat. Large canine teeth. Use teeth to catch and tear their prey.

Question 27

Omnivores

Answer 27

(Humans) Eat plant and meat. Need all of the different teeth.