Systems - Chapter 4

Question 1

oxygen

Answer 1

a gas that living things need to breathe in to survive

Question 2

cellular respiration

Answer 2

process of glucose + oxygen -> carbon dioxide + water + energy

Question 3

glucose

Answer 3

a sugar that is an energy source

Question 4

carbon dioxide

Answer 4

a gas we exhale from our lungs

Question 5

epiglottis

Answer 5

flap of cartilage that closes the passage for the trachea when swallowing

Question 6

respiratory system

Answer 6

the system including the lungs which help us breathe in and out

Question 7

trachea

Answer 7

tube from the mouth to the lungs where air travels through

Question 8

lungs

Answer 8

organs for breathing air

Question 9

bronchi

Answer 9

tube where air travels from the trachea to bronchioles

Question 10

alveoli

Answer 10

air sacs at the end of bronchioles, oxygen moves from the alveoli in to other blood vessels

Question 11

deoxygenated blood

Answer 11

blood which oxygen has been removed from

Question 12

asthma

Answer 12

when the air pipes that join the mouth and nose to the lungs narrow

Question 13

carcinogens

Answer 13

chemicals that cause cancer

Question 14

emphysema

Answer 14

when the air sacs in the lungs break and join, which reduces the amount of 02 in and Co2 out

Question 15

digestion

Answer 15

breakdown of food

Question 16

mechanical digestion

Answer 16

digestion when you do something physically like eating with your teeth

Question 17

chemical digestion

Answer 17

chemical reactions changing food into simpler substances

Question 18

alimentary canal

Answer 18

passage from the mouth to the anus

Question 19

enzymes

Answer 19

special chemicals that speed up reactions

Question 20

saliva

Answer 20

watery substance in your mouth that softens food

Question 21

salivary glands

Answer 21

glands that produce saliva

Question 22

oeosophagus

Answer 22

tube connecting the mouth and the stomach

Question 23

peristalsis

Answer 23

process of pushing food along the oesophagus

Question 24

small intestine

Answer 24

part between the stomach and large intestine

Question 25

herbivore

Answer 25

animal that eats only plants

Question 26

carnivores

Answer 26

animals that eat other animals

Question 27

omnivores

Answer 27

animal that eats both plants and animals

Question 28

proteins

Answer 28

chemical made of amino acids needed for growth and repair of cells

Question 29

ammonia

Answer 29

nitrogenous waste protein break down

Question 30

nitrogenous waste

Answer 30

waste products from protein breakdown

Question 31

urea

Answer 31

a substance containing nitrogen that is released through the kidneys

Question 32

uric acid

Answer 32

nitrogenous waste from protein breakdown

Question 33

endoskeleton

Answer 33

skeleton inside the body

Question 34

exoskeleton

Answer 34

skeleton outside the body