The Mechanism of Breathing (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the primary force for expiration during quiet breathing?
What is the primary force for expiration during quiet breathing?
Elastic recoil of lung tissue
Which muscles contract during inspiration?
Which muscles contract during inspiration?
External intercostals & diaphragm
What happens to lung pressure when thoracic volume increases?
What happens to lung pressure when thoracic volume increases?
Lung pressure decreases
Is inspiration an active or passive process?
Is inspiration an active or passive process?
Active process requiring energy
What is the typical tidal volume at rest?
What is the typical tidal volume at rest?
Around
Calculate pulmonary ventilation rate: tidal volume , breathing rate breaths/min.
Calculate pulmonary ventilation rate: tidal volume , breathing rate breaths/min.
What shape does the diaphragm take when it contracts during inspiration?
What shape does the diaphragm take when it contracts during inspiration?
Flattens
Is quiet expiration an active or passive process?
Is quiet expiration an active or passive process?
Largely passive requiring minimal energy
Which intercostal muscles contract to cause expiration?
Which intercostal muscles contract to cause expiration?
Internal intercostal muscles
When does inspiration occur based on pressure gradients?
When does inspiration occur based on pressure gradients?
When atmospheric pressure lung pressure