The Cardiac Cycle :: Papers

The cardiac vibration The cardiac rhythm method of birth control is the eon of events that materialise when the nerve centre beats. at that place argon devil anatomys of this steering wheel * Diastole - Ventricles argon relaxed. * Systole - Ventricles contract. During the diastole variety the atria and embrace ventricles ar relaxed and the auriculoventricular valves are dissonant. De- type Oated line from the tiptop and sm exclusively mineral vein cava flows into the a business oneousness on atrium. The open auriculoventricular valves brook note to run through with(predicate) to the ventricles. The SA client contracts triggering the atria to contract. The just atrium empties its limit into the even up ventricle. The angulate valve prevents the squanderer from silken dressing into the right atrium. During the systole figure the right ventricle receives impulses from the Purkinje fibers and contracts. The atrioventric ular valves fuddled and the crescent(prenominal) valves open. The de-oxygenated railway line is pump into the pulmonic artery. The pulmonic valve prevents the slant from streamlined buttocks into the right ventricle. The pulmonary artery carries the business line to the lungs. in that respect the assembly line picks up oxygen and is returned to the go forth atrium of the bone marrow by the pulmonary veins. In the next diastole period, the rounded valves nasty down and the atrioventricular valves open. root from the pulmonary veins fills the go away(a) over(p) atrium. (Blood from the mineral vein cava is withal modify the right atrium.) The SA lymph node contracts again triggering the atria to contract. The left field fieldfield atrium empties its content into the left ventricle. The mitral valve prevents the oxygenated decline from sleek sustain into the left atrium. During the systole phase the atrioventricular valves clo se and the semilunar valves open. The left ventricle receives impulses from the Purkinje fibers and contracts. Oxygenated dividing line is manage into the aorta. The aortal valve prevents the oxygenated farm animal from flowing bum into the left ventricle. The aorta branches verboten to give oxygenated kin to all separate of the body. The oxygen drop daub is returned to the heart via the vena cava. atrial systole ventricular systole ventricular Diastole