Answer the following statements true (T) or false (F)

1. During inspiration, the diaphragm contracts and moves up into the thoracic cavity.
2. During inspiration, the size of the chest cavity enlarges.
3. If atmospheric pressure is 760 mm Hg, the pressure inside the chest cavity must be below 760 mm Hg for inspiration to occur.
4. Quiet expiration requires the work of both the intercostal muscles and the abdominal muscles.
5. In some lung diseases, the lungs lose their elasticity and their ability to recoil. This would have the greatest impact on expiration.


1. FALSE
2. TRUE
3. TRUE
4. FALSE
5. TRUE

Anatomy & Physiology

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