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05   the heart 2011
 

05 the heart 2011

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    05   the heart 2011 05 the heart 2011 Presentation Transcript

    • The Heart
    • Superior vena cava inferior vena cava
    • Superior vena cava inferior vena cava Right atrium Tricuspid valve
    • Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle
    • Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery
    • Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery
    • Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery LUNGS OXYGENATE THE BLOOD
    • Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery
    • Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Mitral valve Pulmonary vein
    • Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Mitral valve Left ventricle
    • Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Mitral valve Left ventricle Aorta Septum Aortic valve
    • Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Mitral valve Left ventricle Aorta Septum Aortic valve
    • Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Left ventricle Aorta Septum Mitral valve Bicuspid valve Aortic valve
    • Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Mitral valve Left ventricle Aorta Septum Aortic valve
    • atrioventricular valve atrioventricular valve semilunar valve semilunar valve
    • Prosthetic Valves
    • The Heart
    • The Heartbeat
    • Atrioventricular node Ventricles Atria Body/Lungs Atrioventricular Sinoatrial node Atria Ventricles Ventricles Semilunar SYSTOLE DIASTOLE The Heartbeat
    • Blood Pressure: Measure of force of blood in arterial wall Normal blood pressure Sphygmomanometer The Heartbeat: Blood Pressure SYSTOLIC pressure DIASTOLIC pressure 120 80
    • Heart disorders
      • Arrhythmia: Heart beats irregularly
      • Arises from problems with the electrical activity of the heart
      • Treatment may include implanting an artificial pacemaker or small defibrillator
    • Heart disorders Ventricular fibrillation: Uncoordinated contraction of ventricles. This form of severe arrhythmia can be fatal, and is commonly identified in cardiac arrest patients.
    • Heart disorders Heart murmurs: The heart makes extra sounds due to narrowing or leaking valves, or abnormal passages for blood flowing into or near the heart.
    • Heart disorders Hypertension: High blood pressure ( 140/90 or higher ). Prolonged high blood pressure damages the heart and blood vessels . Heart must pump harder, and over time the heart muscles expand , causing them to weaken . They may also thicken . Artery walls may tear and speed up atherosclerosis due to vessel injury.
    • Heart disorders Congenital heart defect: Defect of the structure of the heart and vessels , present at birth . Example: A septal defect is a hole in the septum , which allows oxygenated and deoxygenated blood to mix. 9 out of 1000 people are born with congenital heart defects.
    • Heart disorders
      • Heart failure:
      • The heart cannot pump blood efficiently because:
      • It cannot fill with enough blood
      • OR
      • 2) Does not pump the blood with enough force
      • A heart transplant may be required.