Physical Education GCSE
Diaphragm structure and action
What Diaphragm structure and action means in Physical Education GCSE, as defined for OCR.
Definition of Diaphragm structure and action
Check what you remember
Read the wording for your board, then hide it and explain Diaphragm structure and action in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
A dome-shaped sheet of muscle separating the thorax from the abdomen; when it contracts it flattens and moves downwards, and when it relaxes it domes upwards.
Topics that use Diaphragm structure and action
- 1.1.d. The cardiovascular and respiratory systems - Structure and function of the respiratory system (OCR GCSE)
Related terms
- Alveoli
- Diffusion
- Gas exchange
- Intercostal muscle action
- minute ventilation
- Pressure and volume changes in the thorax
- tidal volume
- Air pathway
Using Diaphragm structure and action in the exam
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