Question

Describe how the process of forced expiration is different from normal expiration and suggest when it might be used.

Accepted Answer

Forced expiraiton:Internal intercostal muscles contract, pulling ribs down hard and fastAbdominal muscles contract forcing diapgrahm up to increase pressure in lungs rapidlyNeither type of muscle is used in normal expiration, also no muscles contract during normal expiraiton which is a passive process whereas forced expiraiton is an active process

Front	Describe how the process of forced expiration is different from normal expiration and suggest when it might be used.
Back	Forced expiraiton: Internal intercostal muscles contract, pulling ribs down hard and fast Abdominal muscles contract forcing diapgrahm up to increase pressure in lungs rapidly Neither type of muscle is used in normal expiration, also no muscles contract during normal expiraiton which is a passive process whereas forced expiraiton is an active process

Process Forced Normal Muscles Expiration Contract Expiraiton Describe