Lung Capacity

Question 1

lung capacity factors

Answer 1

volume of air in the lungs changes depending on many factors:
- Physical Activity
- Depth of breath
- Sex
- Body Type
- Lifestyle

Question 2

Total lung capacity (TLC)

Answer 2

the maximum volume of air that can be taken into the lungs during a single breath

Question 3

Total lung capacity can also be considered

Answer 3

inspiratory reserve Volume + Tidal Volume + Expiratory reserve volume + Residual volume

Vital Capacity + Residual Volume

Question 4

Tidal volume

Answer 4

• regular breathing only uses small fraction of TLC
• the volume (inhaled or exhaled) during normal breathing
• This is approximately 0.5L in the average adult

Question 5

inspiratory reserve volume

Answer 5

• the amount of air you can inhale at the top of a normal breath (how much is left/extra)
• After a normal inhalation, there is not a complete exchange of the air in the lungs

Question 6

expiratory reserve volume

Answer 6

• ## How much extra exhalation you have left after normal exhale

Question 7

residual volume

Answer 7

• a volume of air that stays in the lungs that prevents the lungs from collapsing
• if lung gets punctured, it looses extra air causing collapsing

Question 8

Oxygen Use

Answer 8

• The rate at which oxygen is used in the body is called your VO2
• the max rate you can sastaine oxygen during physcial activity is V)2 max
• milliliters of oxygen per kilogram of body mass per minute

Question 8

Vital Capacity

Answer 8

• the maximum amount of air that can physically be inhaled or exhaled
• TV can increase during period of high oxygen intake (exerise) and decreaae IRV and ERV
• usually 3.4-3.8L for women and 4.4-4.8 L for men