BTEC Applied Science Unit 5 exam 2023 questions with correct answers - The Heart

Function of the Right Pulmonary Artery Carried deoxygenated blood to the right lung Function of the Aorta Carries oxygenated blood from the left ventricle to the rest of the body Function of the Left Pulmonary Artery Carries deoxygenated blood to the left lung Function of the Left Pulmonary Vein Carries oxygenated blood to heart from left lung Function of Semilunar Valve prevent backflow of blood from aorta to ventricles Function of the Atrioventricular (Bicuspid) Valve Prevent backflow of blood from Left Ventricle to Left Atrium Function of the Septum Cardiac muscle that divides the left and right side of heart Function of Purkinje Fibres Carry nerve impulses to ventricles to ventricles to aid contraction Function of the Inferior Vena Cava Carries deoxygenated blood from the lower body to the heart Function of the Bundles of His transmit impulses from AV Node to ventricles Function of Atrioventricular (Tricuspid) Valve Prevent backflow of blood from Right Ventricle to Right Atrium Function of Sinoatrial Node (SA Node) The pacemaker of the heart, which is responsible for the regular contraction of the heart muscle. Function of the Right Pulmonary Vein Carry oxygenated blood to the heart from right lung Function of the Superior Vena Cava Carry deoxygenated blood from upper body to Right Atrium Step 1 of Blood Flow(deoxygenated) Aorta relax and fill with blood from Superior and Inferior Vena Cavae Step 2 of Blood Flow (deoxygenated) Atria Contract (Atrial Systole) which forces AV valves open and blood moves through to fill ventricles Step 3 of Blood Flow(deoxygenated) AV Valves close shut to prevent backflow Step 4 of Blood Flow (deoxygenated) Ventricles contract (Ventricular Systole) - increases pressure