Unit 6

Question 1

IRV - inspiratory reserve volume

Answer 1

The amount you can force in over the tidal volume

Question 2

TV - Tidal volume

Answer 2

The amount of air moved with normal breathing

Question 3

ERV - expiratory reserve volume

Answer 3

The amount you can expire forcefully over the tidal volume

Question 4

RV - residual volume

Answer 4

The volume that remains in the lungs that you cannot forcibly expire

Question 5

Function:

Trap and remove incoming foreign particles

Answer 5

Structure:

Nasal Mucosa

Question 6

Function:

Depressed on inhalation to decrease intrapulmonary pressure

Answer 6

Structure:

Diaphragm

Question 7

Function:

Gas crosses the respiratory membrane by diffusion

Answer 7

Structure:

Alveoli

Question 8

Function:

Act as resonance chambers for speech

Answer 8

Structure:

Paranasal sinuses

Question 9

Function:

Provides a conduit for air btw the larynx and bronchi

Answer 9

Structure:

Trachea

Question 10

Function:

Common passageway for both air and food

Answer 10

Structure:

Laryngopharynx

Question 11

Function:

Passageway that enters the right and left lung

Answer 11

Structure:

Bronchi

Question 12

Function:

Channels air and food into their proper routes

Answer 12

Structure:

Larynx

Question 13

What is the function of external respiration?

Answer 13

Exchange gases btw pulmonary blood and aLveoli

Question 14

What is the function of internal respiration?

Answer 14

Exchange gases btw blood and the body cells

Question 15

Explain the mechanic of inspiration.

Answer 15

External intercostals and diaphragm contract; intrapulmonary volume increases and intrapulmonary pressure decreases

Question 16

T/F

The visceral pleura covers the lungs surface and the parietal pleura lines the walls of the throracic cavity

Answer 16

TRUE

Question 17

T/F

Pressure in the pleural cavity is always greater than outside the lung

Answer 17

FALSE