International A Level Biology / Muscles, movement and the heart

Cardiac output

Edexcel International A Level Biology (YBI11), chapter 21: Muscles, movement and the heart, specification point 7.13. Part of the full course.

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Cardiac output is the volume of blood pumped by one ventricle each minute. It depends on both stroke volume and heart rate, so it helps show how much blood reaches the body’s tissues.

More lessons in Muscles, movement and the heart

• How muscles, tendons, ligaments and the skeleton produce movement
• The structure of a skeletal muscle fibre
• Fast and slow twitch muscle fibres
• The sliding filament theory
• The myogenic heartbeat: SAN, AVN, bundle of His
• Reading ECGs
• Negative and positive feedback
• Controlling heart rate: the cardiovascular control centre
• Controlling breathing: the ventilation centre
• Core practical 17: spirometer traces and exercise