Regarding the diaphragm

• A. Its fibres arise in continuity with those of the internal oblique muscle
• B. It has a central tendon which is fused inseparably to the visceral pericardium
• C. Its right crus is fixed to the upper two lumbar vertebrae
• D. 95% of its muscle fibres are of the slow twitch fatigue resistant variety
• E. its proprioceptive fibres come from the lower intercostal nerves