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Systole
Diastole
Diastole
Atrial Systole
Ventricular Systole
What happens when the compartment has been emptied of blood?
Which ventricle has a thicker muscular wall ? Why?
Atrio- Ventricular Valves (2)
Why are there valves in veins ?
The heartbeat is initiated in an area of the right atrium called the ___
The wave of excitation passes across both atria until it reaches an area of tissue in the septum called the ____
This in turn passes the wave to a group of fibers called the _____which transfers the wave to the apex of the ventricles.
This causes the ventricles to ____ from the base upwards and forces blood to flow out of the heart through the aorta and ___
Name two specialized structural features of Red blood cells,
Blood is made up of .....
