BTEC Applied Science Unit 5 - The Heart Exam 28 Questions with Answers,100%CORRECT

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BTEC Applied Science Unit 5 - The Heart Exam 28 Questions with Answers Function of the Right Pulmonary Artery - CORRECT ANSWER Carried deoxygenated blood to the right lung Function of the Aort... a - CORRECT ANSWER Carries oxygenated blood from the left ventricle to the rest of the body Function of the Left Pulmonary Artery - CORRECT ANSWER Carries deoxygenated blood to the left lung Function of the Left Pulmonary Vein - CORRECT ANSWER Carries oxygenated blood to heart from left lung Function of Semilunar Valve - CORRECT ANSWER prevent backflow of blood from aorta to ventricles Function of the Atrioventricular (Bicuspid) Valve - CORRECT ANSWER Prevent backflow of blood from Left Ventricle to Left Atrium Function of the Septum - CORRECT ANSWER Cardiac muscle that divides the left and right side of heart Function of Purkinje Fibres - CORRECT ANSWER Carry nerve impulses to ventricles to ventricles to aid contraction Function of the Inferior Vena Cava - CORRECT ANSWER Carries deoxygenated blood from the lower body to the heart Function of the Bundles of His - CORRECT ANSWER transmit impulses from AV Node to ventricles Function of Atrioventricular (Tricuspid) Valve - CORRECT ANSWER Prevent backflow of blood from Right Ventricle to Right Atrium Function of Sinoatrial Node (SA Node) - CORRECT ANSWER The pacemaker of the heart, which is responsible for the regular contraction of the heart muscle. Function of the Right Pulmonary Vein - CORRECT ANSWER Carry oxygenated blood to the heart from right lung Function of the Superior Vena Cava - CORRECT ANSWER Carry deoxygenated blood from upper body to Right Atrium Step 1 of Blood Flow(deoxygenated) - CORRECT ANSWER Aorta relax and fill with blood from Superior and Inferior Vena Cavae Step 2 of Blood Flow (deoxygenated) - CORRECT ANSWER Atria Contract (Atrial Systole) which forces AV valves open and blood moves through to fill ventricles Step 3 of Blood Flow(deoxygenated) - CORRECT ANSWER AV Valves close shut to prevent backflow Step 4 of Blood Flow (deoxygenated) - CORRECT ANSWER Ventricles contract (Ventricular Systole) - increases pressure Step 5 of Blood Flow (deoxygenated) - CORRECT ANSWER The pressure causes semilunar valves to open and blood flows into pulmonary arteries (deoxygenated) The pressure in arteries closes the SL valves to prevent backflow. What happens to the process of blood flow for oxygenated blood? - CORRECT ANSWER The process for deoxygenated is reversed. Blood enters from Pulmonary Veins, into Left Atrium and is forced through to Left Ventricle through the Bicuspid Valve. The ventricle contracts and forced blood through the Sl Valve into the Aorta where it is pumped around the body. The formulae for cardiac output? - CORRECT ANSWER Cardiac Output = Heart Rate X Stroke Volume What is the Cardiac Cycle? - CORRECT ANSWER The process of pumping blood around the heart, once oxygenated blood is received from lung. Step 1 of the cardiac cycle - CORRECT ANSWER Blood drains from Left Atrium from Pulmonary Vein. This is cardiac diastole (heart fills with blood). Step 2 of the cardiac cycle - CORRECT ANSWER The raising of blood pressure in Left Atrium forces Bicuspid Valve to open. Step 3 of the cardiac cycle - CORRECT ANSWER The contraction of Left Atrium (atrial systole) forces blood through the AV valve into the Left Ventricle. Step 4 of the cardiac cycle - CORRECT ANSWER When the Left Ventricle is full (Ventricular Diastole) the ventricles contract (Ventricular Systole). Step 5 of the cardiac cycle - CORRECT ANSWER The pressure caused by Ventricular Systole causes AV Valve to shut and causes SL valves to open. Blood is forced up into the Aorta. What happens to the right side of the heart in the cardiac cycle? - CORRECT ANSWER The process is exactly the same for deoxygenated blood. [Show More]

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