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By: Samantha Peterson Laura Soehngen BJ Dean Zach Palesch.

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Presentation on theme: "By: Samantha Peterson Laura Soehngen BJ Dean Zach Palesch."— Presentation transcript:

1 By: Samantha Peterson Laura Soehngen BJ Dean Zach Palesch

2 Four Chambers Left and Right Atrium- upper and receiving chambers Left and Right Ventricles- lower and pumping chambers Atrium means “entrance hall” in Latin Ventricle means “little belly” in Latin

3 miracle-of-allah/

4 Layers of Heart Wall Endocardium- smooth thin layer of cells that helps to reduce friction caused by blood that is constantly moving through chambers Pericardium- A sac that fits loosely over the heart Myocardium- muscular wall constantly active and needs a generous supply of oxygen and energy from blood

5

6 Inner Anatomy

7 Outer Anatomy AORTA SUPERIOR VENA CAVA PULMONARY TRUNK PULMONARY VEINS RIGHT ATRIUM LEFT ATRIUM RIGHT VENTRICLE LEFT VENTRICLE

8 Valves of the Heart There are 4 valves of the heart Tricuspid valve: right side, 3 cusps Mitral valve: 2 cusps Pulmonary valve: between Right ventricle and pulmonary artery, opens as Right ventricle contracts and forces blood out to the lungs Aortic valve: between the Left ventricle and the aorta, opens as Left ventricle contracts and forces blood out to the body

9 Heart valves open Cusps forced apart by pressure of blood pumped by ventricle Heart valve closed Pressure causes the cusps to close and seal preventing reverse blood flow

10 Bibliography The Circulatory System by Regina Avraham The Human Body by Steve Parker


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