Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
8 Cards in this Set
- Front
- Back
|
The steps of inspiration.
The intercostal muscles and diaphragm muscles ..1.. This causes the ribcage to move ..2.. and ..3.. and the diaphragm to flatten, increasing the volume of the thorax As the volume of the thorax increases the lung pressure ..4.. This causes air to flow into the lungs Inspiration is an active process. |
1=Contract
2=Upwards 3=Outwards 4=Decreases below atmospheric pressure |
|
|
The steps of expiration.
The intercostal and diaphragm muscles..1.. The ribcage moves ..2.. and ..3.. and the diaphragm becomes curved again. The thorax volume decreases, causing the air pressure to ..4.. Air is forced out of the lungs. Expiration is a passive process. |
1=Relax
2=Downwards 3=Inwards 4=Increase above atmospheric pressure |
|
|
Tidal volume is
|
The volume of air in each breath.
|
|
|
Vital capacity is
|
The maximum volume of air that can be breathed in or out.
|
|
|
Breathing rate is
|
How many breaths are taken per minute
|
|
|
Oxygen uptake is
|
the rate at which a person uses up oxygen(Number of dm^3 per minute)
|
|
|
When using a spirometer as the person breaths in and out, the lid of the chamber moves up and down. These movements are recorded by a pen attached to the lid of a chamber. This writes on the rotating drum, creating a ...
|
Spirometer trace
|
|
|
The total volume of gas in the chamber decreases, this is because:
|
Soda lime absorbs carbon dioxide and the body uses oxygen for respiration.
|
