The Heart Objectives: 1.The anatomy of the heart 2.Differentiate between atria & ventricles 3.How valves work 4.Disorders of the heart 5.Heart Sounds.

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Presentation transcript:

The Heart Objectives: 1.The anatomy of the heart 2.Differentiate between atria & ventricles 3.How valves work 4.Disorders of the heart 5.Heart Sounds

Heart Anatomy Apex: The pointed tip of the heart that points down toward the left hip. Base: The wider top portion of the heart. Pericardium: The sac that encloses the heart  Base Apex 

Atria: Top two chambers Ventricles: Bottom two chambers Interventricular Septum: The wall that divides the heart longitudinally Aorta: Largest artery where blood leaves the heart

Chordae Tendinae: Heart strings that open and close heart valves. Arteries: Carries oxygenated blood away from the heart & lungs to the rest of the body. (red) Veins: Carries deoxygenated blood from the body back to the heart & lungs. (blue)

Valves: Atrioventricular Valves (AV): Found connecting the atria to ventricles. Bicuspid Tricuspid Semilunar Valves: Found in places where blood exits the heart. Pulmonary Semilunar Aortic Semilunar

Disorders Angina Pectoris: Chest pains caused by lack of oxygen to the heart. Myocardial Infarction: Heart cells die. Heart attack. Murmurs: Sounds created by improper blood flow. Usually caused by valve problems. Tachycardia: Rapid heartbeat (>100bpm) Bradycardia: Slow heartbeat (<60bpm)

Heart Sounds Systole: Contraction of the heart Diastole: Relaxation of the heart Lub: Closing of the AV Valves Dup: Closing of the Semilunar Valves

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