Difference between revisions of "Alveoli"
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===Meaning=== | ===Meaning=== | ||
[[Alveoli]] are small air sacs in the [[lungs]] which are specially [[Adaptation|adapted]] for gas exchange. | [[Alveoli]] are small air sacs in the [[lungs]] which are specially [[Adaptation|adapted]] for gas exchange. | ||
| + | {| class="wikitable" | ||
| + | |- | ||
| + | |[[File:AirSacs.png|center|400px]] | ||
| + | |- | ||
| + | | style="height:20px; width:400px; text-align:center;" |A picture showing several [[alveoli]] and the [[Capillary|capillaries]] supplying them with [[blood]]. | ||
| + | |} | ||
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| + | : Singular [[Noun]]: '''Alveolus''' | ||
| + | : Plural [[Noun]]: '''Alveoli''' | ||
===Adaptations of Alveoli=== | ===Adaptations of Alveoli=== | ||
| + | : The [[alveoli]] have thin walls to allow gas exchange to happen quickly. | ||
| + | : [[Alveoli]] are in groups to make a large [[Surface Area|surface area]] in the [[lung]] for gas exchange. | ||
| + | : The [[alveoli]] have a good [[blood]] supply to allow gas exchange with the [[blood]]. | ||
| + | : The walls of the [[alveoli]] are kept moist to allow gases to [[dissolve]] into to the fluid for gas exchange with the [[blood]]. | ||
| + | |||
| + | ===About Alveoli=== | ||
| + | : The [[alveoli]] are where [[Oxygen]] enters the [[blood]] and [[Carbon Dioxide]] leaves the [[blood]]. | ||
| + | : There are thousands of [[alveoli]] in each [[lung]]. | ||
| + | : [[Alveoli]] are found at the end of [[bronchiole]]s. | ||
| + | |||
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
| − | |[[File: | + | |[[File:AlveolusGasExchange.png|center|400px]] |
|- | |- | ||
| − | | style="height:20px; width:400px; text-align:center;" | | + | | style="height:20px; width:400px; text-align:center;" |A [[diagram]] showing a single [[alveolus]] with the [[Oxygen]] going into the [[blood]] and [[Carbon Dioxide]] leaving the [[blood]]. |
|} | |} | ||
Revision as of 07:54, 18 September 2018
Key Stage 3
Meaning
Alveoli are small air sacs in the lungs which are specially adapted for gas exchange.
 |
| A picture showing several alveoli and the capillaries supplying them with blood. |
Adaptations of Alveoli
- The alveoli have thin walls to allow gas exchange to happen quickly.
- Alveoli are in groups to make a large surface area in the lung for gas exchange.
- The alveoli have a good blood supply to allow gas exchange with the blood.
- The walls of the alveoli are kept moist to allow gases to dissolve into to the fluid for gas exchange with the blood.
About Alveoli
- The alveoli are where Oxygen enters the blood and Carbon Dioxide leaves the blood.
- There are thousands of alveoli in each lung.
- Alveoli are found at the end of bronchioles.
 |
| A diagram showing a single alveolus with the Oxygen going into the blood and Carbon Dioxide leaving the blood. |