Respiratory System

Question 1

Oxygen and Carbon dioxide gas exchange steps

Answer 1

1) Ventilation: Moves oxygen to and from exchange surfaces
2) External respiration: Area for gas exchange
3) Transport: Moves gases into and out of body
4) Internal respiration: Exchange of gases between blood and tissues

Question 2

Conducting portion location

Answer 2

Nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, terminal bronchioles

Question 3

Respiratory portion location

Answer 3

Respiratory bronchioles and alveoli

Question 4

Conducting tract function

Answer 4

Filters by removing particles and pathogen’s before it reaches the alveoli and humidifies air

Question 5

Respiratory defense system

Answer 5

• Nasal cavity filters particles greater than 10 µm
• goblet cells produce mucus that trap small debris and micro organisms
• cilia sweep them out
• smaller particles are trapped in mucus covering bronchioles or in alveolar fluids