Pulmonary Phys Introduction

Question 1

Moves particles up respiratory tract towards mouth

Answer 1

mucous-ciliary elevator

Question 2

Cigarrette smoking and mucous-ciliary elevator

Answer 2

smoking paralyzes mucous-ciliary elevator

Question 3

Diffusion of gases in alvelar capillaries depends on

Answer 3

pressure

not concentration

Question 4

of alveoli

Answer 4

500 million

Question 5

Airway path

Answer 5

trachea → bronchi → lobar bronchi → segmental bronchi → terminal bronchioles → respiratory bronchioles

Question 6

Conducting airway

Answer 6

trachea → bronchi → lobar bronchi → segmental bronchi → terminal bronchioles

Question 7

Respiratory zone

Answer 7

respiratory bronchioles → alveolar ducts → alveoli

Question 8

Air in conducting zone

moves via

Answer 8

convection

Question 9

Air in respiratory zone

moves via

Answer 9

diffusion

Question 10

Why is it signifigant that air doesn’t move via convention in respiratory zone?

Answer 10

that means that dust will settle where convection ends

ie terminal bronchioles

that means we can move dust up via mucous-ciliary elevator to be coughed up and expelled

Question 11

Conducting airway volume

Answer 11

150 mL

Question 12

Typical breah volume

Answer 12

500 mL

Question 13

Compliance of lungs

Answer 13

500 mL/3 cm H₂O

Question 14

Low compliance leads to

Answer 14

rapid, shallow breathing

Question 15

Bronchioles receive blood from

Answer 15

aorta ie systemic circulation

Question 16

Inhaled particles are cleared via

Answer 16

nose: filtration

mucous-ciliary elevator: conducting airway

macrophages: alveoli

Question 17

Surface tension decreased using

Answer 17

surfactant