Resp 2

Question 1

Type I alveolar cell

Answer 1

for gas exchange

Question 2

Type II alveolar cell

Answer 2

surfactant cell

Question 3

The pulmonary circulation has a ______ flow rate, and a _____ pressure circuit.

Answer 3

high, low

Question 4

partial pressure

Answer 4

pressure exerted by one gas

Question 5

Dalton’s law

Answer 5

the total pressure exerted by a mixture of gases is the sum of the pressure exerted by each gas

Question 6

Air moves from a region of ___ pressure to ___ pressure.

Answer 6

high, low

Question 7

F=

Answer 7

deltaP/R (pressure difference between two points, and resistance)

Question 8

pressures during inspiration

Answer 8

Palv < Patm

Question 9

pressures during expiration

Answer 9

Palv > Patm

Question 10

Boyle’s Law

Answer 10

P1V1=P2V2

Question 11

ventilation =

Answer 11

breathing

Question 12

define ventilation

Answer 12

bulk flow exchange of air between atmosphere and alveoli

Question 13

How does a spirometer work?

Answer 13

When subject inhales, air moves into lungs and volume of bell decreases causing the pen to rise on tracing

Question 14

tidal volume

Answer 14

~500ml; the normal volume of air displaced between normal inhalation and exhalation

Question 15

inspiratory reserve volume

Answer 15

~3000mL; the additional air that could still be inspired

Question 16

expiratory reserve volume

Answer 16

~1100mL; the volume of air that still remains within the lungs that can be expired

Question 17

residual volume

Answer 17

~1200mL; always in the lungs even with maximal expiratory effort

Question 18

Important functions of lung volumes

Answer 18

• prevent airway collapse

- allows continuous exchange

Question 19

total lung capacity

Answer 19

sum of all 4 volumes

Question 20

functional residual capacity

Answer 20

sum of ERV and RV; capacity of air remaining after expiration

Question 21

inspiratory capacity

Answer 21

sum of IRV and TV; maximal amount of air than one can inspire

Question 22

vital capacity

Answer 22

sum of IRV, TV, and ERV; max achievable tidal volume

Question 23

FVC

Answer 23

forced vital capacity

Question 24

FEV1

Answer 24

forced expired volume in 1 second

Question 25

pulmonary function test

Answer 25

Testing an individuals FVC and comparing it to their FEV1

Question 26

During ventilation, air flows due to…

Answer 26

pressure gradients

Question 27

60%-75% of inspiratory volume change is due to…

Answer 27

the diaphragm

Question 28

Inspiration occurs when….

Answer 28

alveolar pressure decreases

Question 29

How do we decrease alveolar pressure/inspire?

Answer 29

increasing alveolar volume with our inspiratory skeletal muscles

Question 30

25%-40% of inspiratory volume change is due to..

Answer 30

movements of the rib cage

Question 31

Expiration occurs when…

Answer 31

alveolar pressure increases