Respiratory System

Question 1

Nose

Answer 1

Filters and Warm the air we inhale (mucous/cilia, traps pathogens)

Question 2

Mouth

Answer 2

Allows air entry through mouth breathing

Question 3

Pharynx

Answer 3

Allows movement of air from the nose and mouth to the larynx (mucous for protection)

Question 4

Larynx

Answer 4

Passageway for air - epiglottis protects from food entering / vocal cords - voice

Question 5

Trachea

Answer 5

Allows air to pass from larynx to bronchi ( C cartilage to ensure open airway)

Question 6

Lung

Answer 6

Essential organ of respiration. Allows air flow for exchange of O2 and CO2

Question 7

Bronchus

Answer 7

Directs air to into the lungs and to bronchioles

Question 8

Bronchioles

Answer 8

Directs air to the alveoli

Question 9

Alveoli

Answer 9

Enables gas exchange of oxygen and carbon dioxide via diffusion

Question 10

Diaphragm

Answer 10

Contracts and Relaxes - helps expand and contract lungs for air to enter (inhalation) and air to leave (exhalation), breathing in and out.

Question 11

Pleura

Answer 11

Protecting - allows lung movements in ‘ breathing’ - respiration

Question 12

Describe External and Internal Respiration

Answer 12

• External Respiration is transfer of gases from the external environment through to the lungs and into the bloodstream. Includes inhalation, transfer of gases in alveoli and exhalation.
• Internal Respiration is gas exchange (O2 and CO2) that occurs between the blood, cells and tissue.