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Title: Ventilation - AQA AS Level Biology
Description: As title describes, concise notes covering Ventilation under chapter 6 of the kerboodle AS level (new( spec Biology.
Description: As title describes, concise notes covering Ventilation under chapter 6 of the kerboodle AS level (new( spec Biology.
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Ventilation
The Pathway to the Lungs
Mouth
Larynx
Trachea
Bronchi
Bronchioles
Alveoli
The Mechanism of Breathing
Inspiration (inhalation) Your external intercostal muscles contract, and your internal intercostal
muscles contract, causing the ribs to be pulled upwards and outwards
...
This has the net effect of
increasing the volume of the thorax, and so of the lungs
...
Expiration (exhalation) The converse paragraph
...
Antagonistic Muscles (not a necessary definition just useful to know) muscles are antagonistic
to one another when one contracts and the other relaxes
...
Forced Exhalation (“”) expiration sometimes related to sport or exercise, this is a situation in
which the internal intercostal muscles contract more than they usually do in order to increase
pulmonary pressure faster, to force air out of the lungs faster
Title: Ventilation - AQA AS Level Biology
Description: As title describes, concise notes covering Ventilation under chapter 6 of the kerboodle AS level (new( spec Biology.
Description: As title describes, concise notes covering Ventilation under chapter 6 of the kerboodle AS level (new( spec Biology.