Lab 7 (part 2 of 2) - Respiratory System Flashcards Preview

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Flashcards in Lab 7 (part 2 of 2) - Respiratory System Deck (29):
1

Explain Boyle's Law

- Pressure (P) and Volume (V) are inversely proportional
- The less space, the greater the pressure, and vice versa

2

Air always flows from ___ pressure to ___ pressure.

Air always flows from higher pressure to lower pressure.

3

List the steps and explain:

Inspiration

1. External intercostals and diaphragm contract downward to increase the volume of the thoracic cavity.

2. Because the volume of the chest cavity is increased, the pressure inside the chest cavity and inside the lungs decreases.

3. Air moves from higher pressure (atmosphere) to lower pressure (lungs) = inspiration

4

List the steps and explain:

Expiration

1. External intercostals and diaphragm relax upward to decrease the volume of the thoracic cavity.

2. Because the volume of the chest cavity is decreased, the pressure inside the chest cavity and inside the lungs increases.

3. Air moves from higher pressure (lungs) to lower pressure (atmosphere) = expiration

5

What is TV?

- Tidal Volume
- Normal (resting) inspiration and expiration
- Typically around 500 mL

6

What is IRV?

- Inspiratory Reserve Volume
- Forced inspiration
- Typically around 3100 mL

7

What is ERV?

- Expiratory Reserve Volume
- Forced expiration
- Typically around 1200 mL

8

What is RV?

- Residual Volume
- Air left in the lungs after VC
- Typically around 1200 mL

9

What is VC?

- Vital Capacity
- (TV + IRV + ERV)
- Typically around 4800 mL
- Makes up around 80% of TLC

10

What is TLC?

- Total Lung Capacity
- (VC + RV)
- Typically around 6000 mL

11

FEV (sub T)

Forced Expiratory Volume at different time intervals

12

FEV (sub 1)

Forced Expiratory Volume during the 1st second

13

FEV (sub 2)

Forced Expiratory Volume during the 1st and 2nd seconds

14

FEV (sub 3)

Forced Expiratory Volume during the 1st, 2nd, and 3rd seconds

15

What factors will affect respiratory volumes?

- Age
- Physical condition
- Sex

16

Inspiration or expiration?

External intercostals and diaphragm contract downward to increase the volume of the thoracic cavity.

Inspiration

17

Inspiration or expiration?

Because the volume of the chest cavity is increased, the pressure inside the chest cavity and inside the lungs decreases.

Inspiration

18

Inspiration or expiration?

Air moves from higher pressure (atmosphere) to lower pressure (lungs)

Inspiration

19

Inspiration or expiration?

External intercostals and diaphragm relax upward to decrease the volume of the thoracic cavity.

Expiration

20

Inspiration or expiration?

Because the volume of the chest cavity is decreased, the pressure inside the chest cavity and inside the lungs increases.

Expiration

21

Inspiration or expiration?

Air moves from higher pressure (lungs) to lower pressure (atmosphere)

Expiration

22

Define TV.

- Tidal Volume

- Consists of normal inspiration and expiration

- Usually around 500 mL

23

Define IRV.

- Inspiratory Reserve Volume

- Forced inspiration

- Usually around 3100 mL

24

Define ERV.

- Expiratory Reserve Volume

- Forced expiration

- Usually around 1200 mL

25

Define RV.

- Residual Volume

- Air left in lungs after VC

- Usually around 1200 mL

26

Define VC.

- Vital capacity

- Formula:
TV + IRV + ERV

- Usually about 4800 mL (therefore, makes up about 80% of TLC)

27

Define TLC.

- Total Lung Capacity

- Formula:
VC + RV

- Usually about 6000 mL

28

Define TLC.

- Total Lung Capacity

- Formula:
VC + RV

- Usually about 6000 mL

29

Define these:

- FEVT

- FEV1

- FEV2

- FEV3

Forced Expiratory Volume

- FEVT = at different time intervals

- FEV1 = during the 1st second

- FEV2 = during 1st and 2nd seconds

- FEV3 = during 1st, 2nd, 3rd seconds