The cardiac cycle

• Resources Structure
• A level
• Biology
• VII. Internal transport
• 45. Structure and functions of the heart

• Exam Specifications
• A Level
• AQA GCE AS/A Biology A (5411/6411 / 5413/6413)
• I. AS Module 1 (Biology and Human Biology) Molecules, Cells and Systems
• 8. The functioning of the heart plays a central role in the circulation of blood and relates to the level of activity of an individua
• Heart structure
• Heart function
• Effects of exercise

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