HEART: Chambered muscle organ that is composed of Cardiac muscle, and is myogenic to initiate contractions to pump blood around the body
ATRIO VENTRICULAR VALVE: Valve that prevents the backflow of blood from Ventricle to Atrium
SEMILUNAR VALVE: Valve that prevents the backflow of blood from Artery to Ventricle
FUNCTION OF THE HEART
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Diagram showing the Structure of the Heart
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PROCESS:
Deoxygenated blood from respiring cells are carried by the Vena Cava to the Right Atrium
Right Atrium will contract to increase pressure, pushing blood into Right Ventricle through Atrioventricular Valve
Atrioventricular Valve closes to prevent backflow of blood from Ventricle to Atrium
Right Ventricle will contract to increase pressure, causing blood to be carried out via Pulmonary Artery to be Oxygenated at the Lungs through the Semilunar Valve
Semilunar Valve closes to prevent backflow of blood from Artery to Ventricle
Left Atrium will contract to increase pressure, pushing blood into Left Ventricle through Atrioventricular Valve
Atrioventricular Valve closes to prevent backflow of blood from Ventricle to Atrium
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The directions of blood flow in the left side of the heart have been reversed.
ReplyDeleteI'm referring to the heart diagram.
DeleteI agree it should be coming from pulmonary artery to the aorta. Please change the diagram from any confusion. Thanks
Deletedeoxygenated blood travels from the vena cava to the pulmonary artery, and the oxygenated blood travels from the pulmonary vein to the aorta and out to the rest of the body
DeleteI cant seem to see any mistakes... Perhaps it has already been fixed?
DeleteThe heart diagram is wrong in multiple places, for a better reference go to the BBC Bitesize page for a correctly annotated diagram.
ReplyDeletethe blood flow is correct now though
Delete