2.3 energy and waste

Question 1

when you put the food into your mouth.

Answer 1

ingestion

Question 2

where mechanical and chemical digestion begin

Answer 2

mouth

Question 3

When teeth and tongue chew food

Answer 3

mechanical digestion

Question 4

makes saliva that breaks down food

Answer 4

salvery glans

Question 5

The amount of energy in food is measured in calories

Answer 5

calorie

Question 6

the amount of energy it takes to raise the temperature of 1 kg of water by 1 C

Answer 6

calorie

Question 7

Releases the energy from the processed

Answer 7

you digestive system

Question 8

the parts of food used by the body to grow and survive

Answer 8

nutrients

Question 9

5 examples of nutrients

Answer 9

proteins, fats, carbohydrates, vitamins and minerals

Question 10

The mechanical and chemical breakdown of food into small particles and molecules that your body can absorb and use.

Answer 10

digestion

Question 11

the 4 steps of digestion

Answer 11

ingestion, digestion, absorption, and elimination.

Question 12

when you chew, mash, and grind food with your teeth and tongue

Answer 12

mechanical digestion

Question 13

breakdown pieces of food into small molecules

Answer 13

chemical digestion

Question 14

when you put food, such as bread, into your mouth

Answer 14

ingestion

Question 15

an enzyme, in your mouth, that helps break down carbohydrates

Answer 15

saliva

Question 16

a muscular tube that connects the mouth to the stomach

Answer 16

esophagus

Question 17

food moves through the esophagus and the rest of the digestive tract by waves of muscle

Answer 17

peristalsis

Question 18

a large, hollow organ that stores food

Answer 18

stomach

Question 19

An adult liquid can hold about ________ of food and liquid

Answer 19

2 liters

Question 20

enable the stomach to expand and hold large amounts of food

Answer 20

the folds on the inner walls

Question 21

the cells in these folds produce chemicals that help break down _______________.

Answer 21

proteins

Question 22

this stomach fluid makes the stomach acidic

Answer 22

gastric juice

Question 23

an enzyme that helps break sown the proteins in foods into amino acid

Answer 23

pepsin

Question 24

a long tube that is connected to the stomach. it is about 7m (23ft) long

Answer 24

small intestine

Question 25

finger like projections that cover the fold of the small intestine

Answer 25

villi

Question 26

nutrients enter the blood through blood vessels in this digestive organ.

Answer 26

small intestine

Question 27

also know as, the colon.

Answer 27

large intestine

Question 28

is about 1.5 . (5ft) long, it has larger diameter (about 5 cm or 2in) than the small intestine.

Answer 28

large intestine

Question 29

where water is absorbed, leaving behind semi solid waste.

Answer 29

large intestine

Question 30

the last section of the large intestine, about 8 inches long

Answer 30

rectum

Question 31

the final opening or “exit door” of the digestive system

Answer 31

anus

Question 32

the semisolid waste that is ready to leave the digestive system

Answer 32

feces

Question 33

removes liquid waste from the body

Answer 33

urinary system

Question 34

bean shaped organs that filter, or remove, waste from blood

Answer 34

kidneys

Question 35

ureters from the kidneys deliver liquid waste to this organ that is like a w

Answer 35

bladder

Question 36

liquid waste leaves the body from this small tube that is connected to the _________

Answer 36

urethra