Heart Chambers Notes PDF

The Right ventricle- Heart Chambers: The right ventricle Pumping/discharging chamber. Most of the right ventricle is on the anterior side of the heart. The right ventricle has thicker walls than atria. The right ventricle receives deoxygenated blood from the right atrium. The right ventricle opens t...

The Right ventricle- Heart Chambers: The right ventricle Pumping/discharging chamber. Most of the right ventricle is on the anterior side of the heart. The right ventricle has thicker walls than atria. The right ventricle receives deoxygenated blood from the right atrium. The right ventricle opens to the pulmonary trunk. The left ventricle contains trabeculae carnae. The Left Atrium- Heart Chambers: The left atrium is a thin-walled receiving chamber. Most of the left atrium is on the posterior side of the heart. The left atrium forms the heart’s base. The left atrium contains auricles which are extensions that increase volume. The left atrium contains pectinate muscles for large force of contraction. The left atrium receives oxygenated blood returning from lungs through four openings which are the four pulmonary veins. The Left ventricle- Heart Chambers: The left ventricle is a pumping/discharging chamber. The left ventricle forms the apex and posteroinferior aspect of the heart. The left ventricle is the thickest-walled chamber in the heart. The left ventricle receives oxygenated blood from the left atrium. The left ventricle opens to the aorta. The left ventricle contains trabeculae carnae. Blood entering the heart: Into the right atrium: Deoxygenated blood enters the right atrium from the superior and inferior vena cava from systemic circulation and the coronary sinus from coronary circulation. Into Left Atrium: Oxygenated blood enters the left atrium from the left and right pulmonary veins from the pulmonary circulation. Blood exiting the out of the heart: Out of the right ventricle: Deoxygenated blood exits the right ventricle through the pulmonary trunk to pulmonary circulation (to the lungs). Out of the left ventricle: Oxygenated blood exits the left ventricle through the aorta to systemic circulation (to be distributed throughout the body).