The Respiratory System

Question 1

Mouth and nose

Answer 1

Openings that pull air from outside your body into your respiratory system

Question 2

Sinuses

Answer 2

Hollow areas between the bones in your head that help regulate the temperature and humidity of the air you inhale

Question 3

Pharynx

Answer 3

Tube that delivers air from your mouth and nose to the trachea

Question 4

Trachea

Answer 4

Passage connecting your throat and lungs

Question 5

Bronchial tubes

Answer 5

Tubes at the bottom of your windpipe that connect into each lung

Question 6

Lungs

Answer 6

Two organs that remove oxygen from the air and pass it into your blood

Question 7

Diaphragm

Answer 7

Muscle that helps your lungs pull in air and push it out

Question 8

Ribs

Answer 8

Bones that surround and protect your lungs and heart

Question 9

Alveoli

Answer 9

Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place

Question 10

Bronchioles

Answer 10

Small branches of the bronchial tubes that lead to the alveoli

Question 11

Capillaries

Answer 11

Blood vessels in the alveoli walls that move oxygen and carbon dioxide

Question 12

Lung lobes

Answer 12

Sections of the lungs (3 lobes in the right lungs and 2 in the left lung)

Question 13

Pleura

Answer 13

Thin sacs that surround each lung lobe and separate your lungs from the chest wall

Question 14

Cilia

Answer 14

Tiny hairs that move in a wave-like motion to filter dust and other irritants out of your airways

Question 15

Epiglottis

Answer 15

Tissue flap at the entrance to the trachea that closes when you swallow to keep food and liquids out of your airway

Question 16

Larynx

Answer 16

Hollow organs that allows you to talk and make sounds when air moves in and out

Question 17

Inspiration

Answer 17

Breathing in

Question 18

Expiration

Answer 18

Breathing out

Question 19

What muscles does inspiration involve

Answer 19

Diaphragm and external intercostal muscles

Question 20

What happens to the diaphragm when we breathe in

Answer 20

It contracts which causes it to move down

Question 21

What happens to the external intercostal muscles when we breathe in

Answer 21

Muscles contract which causes the rib cage to move up and outwards

Question 22

What happens to the diaphragm when we breathe out

Answer 22

It moves up

Question 23

Describe the method of inhalation

Answer 23

Rib muscles and diaphragm contact, volume of chest cavity increases, air pressure decreases

Question 24

Describe the method of expiration

Answer 24

Rib muscles and diaphragm relax, volume of chest cavity decreases, air pressure increases