Structure and Function of The Respiratory System

Question 1

What are the stages does AIR move through the RESPIRATORY SYSTEM?

Answer 1

Nasal Cavity—>Pharynx—>Larynx—>Trachea—>Bronchus—>Bronchioles—>Alveoli

Question 2

What is the ROLE of the NASAL CAVITY in the RS?

Answer 2

Allows air to be inhaled and Filtered of micro-debris

Question 3

What is the ROLE of the PHARYNX in the RS?

Answer 3

Acts as a Passage-way for Air and Food

Question 4

What is the ROLE of the LARYNX in the RS?

Answer 4

Voicebox, allows Air to pass into the Trachea

Question 5

What is the ROLE of the TRACHEA in the RS?

Answer 5

• Cartilage that further Filters air
• Allows air to flow into Bronchus

Question 6

What is the ROLE of the BRONCHUS in the RS?

Answer 6

• One Bronchus to each Lung
• Allows air to flow into Bronchioles

Question 7

What is the ROLE of the BRONCHIOLES in the RS?

Answer 7

• Allows air to flow into the Alveoli

Question 8

What is the ROLE of the ALVEOLI in the RS?

Answer 8

• Tiny air sacs where Gaseous Exchange occurs

Question 9

What is the ROLE of the DIAPHRAM in the RS?

Answer 9

• Dome-shaped muscle that Contracts/Relaxes
• Creating pressure gradients for breathing to occur

Question 10

What is the ROLE of the INTERCOSTAL MUSCLES in the RS?

Answer 10

• Muscles in the Ribs that Contract/Relax to pull Rib Cage Out/Low
• To create pressure gradients for breathing to occur

Question 11

What is the ROLE of CAPILLARIES in the RS?

Answer 11

Allows Gaseous Exchange

Question 12

What are the ADAPTATIONS of the ALVEOLI that allow for EFFICIENT GASEOUS EXCHANGE?

Answer 12

• Thin Cell Membrane for short diffusion distance
• Many of them for increased SA=More Diffusion occurring
• Large Capillary Network for O2 to Diffuse into