Functions And Passage Of Air Flow

Question 1

Functions of the Respiratory System

Answer 1

1. Protect respiratory surfaces from dehydertion, temp changes and pathogens
2. Provide extensive surface area for gas exchange between air and circulating blood (~130m^2)
3. Move air to and from exchange surfaces of lungs
4. Produce sounds via vocal chords in larynx. Vibrate
5. Detect odours w. Olfactory receptors in nasal cavity

Question 2

Why is nose breathing better than mouth?

Answer 2

Respiratory mucosa rests on thin- walled veins that warm incoming air
Mucous glands and goblet cells moistens air and traps dust and bacteria. The oral mucosa perfums none of these functions.

Question 3

Functions of the conducting zone

Answer 3

Provide a passage for incoming and outgoing air, remove debris and pathogens from air, warm and humidify air.

Question 4

Respiratory zone

Answer 4

Where gas exchange occurs

Question 5

Upper systems of the respiratory system

Answer 5

Nose, nasal cavity, paranasal sinuses and pharynx