Measuring lung volumes

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  • Created by: Lidz27800
  • Created on: 06-03-17 11:33
Breathing rate
The amount of breaths inhaled and exhaled per minute
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Oxygen uptake
The volume of oxygen absorbed into the lungs per minute
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Tidal volume
Measured at rest, the volume of AIR inhaled/exhaled per breath
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Vital Capacity
the greatest volume of air that can be exhaled from lungs after taking the deepest breath
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Spirometer
A device to measure the movement of air in and out of lungs
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Residual Volume
The volume of air that remains in the lungs after forced expiration
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List the adaptations for alveoli to reduce diffusion distance
alveolus and capillary walls = 1 cell thick, capillaries contact with alveolus wall, alveoli has squamous epithelial cells, capillaries are narrow
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Adaptations for alveoli
Large surface area to inceease diffusion rate, layer of moisture for gases to dissolve, netowork of blood capillaries to reduce for quicker gas exchange, thin barrier permeable to CO2 and O2 to reduce diffusion pathway
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Functions of surfactant
Surfactant reduces surface tension, pulmonary surf. secreted into alveoli by cells, it has phospholipids, interspersed with H2O air and water molecules, removed by macrophages
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Other cards in this set

Card 2

Front

Oxygen uptake

Back

The volume of oxygen absorbed into the lungs per minute

Card 3

Front

Tidal volume

Back

Preview of the front of card 3

Card 4

Front

Vital Capacity

Back

Preview of the front of card 4

Card 5

Front

Spirometer

Back

Preview of the front of card 5
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