Anatomy

Question 1

Nose (Nasal Cavity)

Answer 1

air enters here, air is cleaned by cilia and warmed and humidified by the mucous membrane

Question 2

Trachea

Answer 2

• Lined with cilia, traps particles which gets push back up to pharynx
• Reinforced with cartilage

Question 3

Bronchi

Answer 3

• Lead from trachea to lungs
  -Primary bronchi -> secondary bronchi -> tertiary bronchi -> terminal bronchioles -> respiratory bronchioles (alveolar ducts) -> alveoli

Question 4

Terminal bronchioles

Answer 4

smallest tubes that divided from the tertiary bronchi

Question 5

Respiratory Bronchioles (alveolar ducts)

Answer 5

very thin tubes, terminate at alveoli

Question 6

Alveoli

Answer 6

• Air sacs encased in capillary net
• Inflatable (initially filled with stale air or residual air)
  -grape like
• approximately 300 million in number
• total surface area is about HALF a tennis court
• the more surface area, the higher the rate of diffusion

Question 7

pleural cavity

Answer 7

• located in between the visceral pleura (inner) and the parietal pleura (outer).
• contains thin film of serous fluid