Respiratory Volumes And Capacities

Question 1

Volume

Answer 1

The amount of air the lungs can hold

Question 2

Capacity

Answer 2

The combination of 1 or more volumes

Question 3

How are volumes and capacities measured?

Answer 3

• milliliters (ml)

- cubic centimeters (cc)

Question 4

Factors that influence volume and capacity will vary as a function of: (5)

Answer 4

1. Body size
2. Gender: men typically have higher lung capacity volume
3. Age
4. Height
5. The presence of disease/disorder: neurodegenerative disorders (ALS, Parkinson’s)

Question 5

Types of volumes:

Answer 5

1. Tidal Volume (TV, quiet volume)
2. Inspiratory reserve volume (IRV)
3. Expiratory reserve volume (ERV)
4. Residual volume (RV)
5. Dead air space

Question 6

Tidal Volume (TV, quiet volume):

Answer 6

1. the volume of air that is exchanged during one cycle of respiration (one inhalation and one exhalation)
2. Will vary as a function: body size, age, physical exertion

Question 7

Inspiratory reserve volume (IRV):

Answer 7

• the volume of air that can be inhaled after one tidal inspiration
• this is the amount of air that you can inhale, above and beyond what you can normally inhale
• smoking weed

Question 8

Residual volume (RV):

Answer 8

• the amount of air that remains in the lungs (alveoli) after a maximum exhalation
• you always have air in your lungs, even after exhalation
• stays in lungs so they don’t completely deflate

Question 9

Expiratory reserve volume (ERV)

Answer 9

• resting lung volume
• the volume of air that can be exhaled after passive, tidal expiration
• the amount of air that can be forced out of your lungs after a normal exhalation

Question 10

Dead air space

Answer 10

• AKA anatomic dead space
• the air that remains within the respiratory tract itself, in the oral/pharyngeal cavities, trachea–> in mouth, oral cavity, pharynx, nasal cavity, nose
• not found in the alveoli (air sacs)
• cannot be exhaled

Question 11

Capacities definition:

Answer 11

Refers to the combination of 2+ (2 or more) volumes

Question 12

Types of capacities: (4)

Answer 12

1. Vital capacity
2. Functional residual capacity (FRC)
3. Total lung capacity (TLC)
4. Inspiratory capacity (IC)

Question 13

Vital capacity:

Answer 13

• the total amount of air that can be inhaled after a maximum exhalation–> massive inhalation and massive exhalation
• inspiratory+expiratory reserve volumes+ tidal volumes
• -> tells you how much air a person has on which to speak, speech production

Question 14

Functional residual capacity (FRC):

Answer 14

• the volume of air that is in the body at the end of a passive exhalation (what is left over after a simple exhalation)
• expiratory reserve + residual volumes

Question 15

Total lung capacity (TLC):

Answer 15

• sum of [inspiratory reserve volume+tidal volume+expiratory reserve volume volume+residual volume]

Question 16

Inspiratory capacity (IC):

Answer 16

• the maximum inspiratory volume that is possible after tidal expiration
• tidal Volume + inspiratory volume
• the capacity of the lungs for inspiration only

Question 17

TRUE OR FALSE: men typically have a higher lung capacity volume

Answer 17

True