A level (3.1.2 Transport in Animals) Biology Fichas sobre The Structure of the Heart and the Cardiac Cycle, creado por Yinka F el 01/02/2018.
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Creado por Yinka F
hace casi 7 años
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Cerrar
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Creado por Yinka F
hace casi 7 años
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Describe the structure of the heart
What are the valves held in place by?
What is the role of valves?
Complete the sentences:
If there is a __________ pressure behind a valve, it is forced open. If there is a higher pressure in front of the valve, it is forced _________. This means that the flow of blood is _____________ - it only flows in ______ ____________
What is the role of the cardiac cycle?
Within the human heartbeat, you can hear a 'lub-dub' sound. What is the 'lub' and the 'dub' sound caused by?
What are the 3 stages of the cardiac cycle?
What happens during atrial systole?
What happens during ventricular systole?
What happens during diastole?
