Powerpoint Presentation

POWERPOINT PRESENTATION

REMYA.RREG.NO.181/14376016

NATURAL SCIENCE

WELCOME

TITLE HEART

INTRODUCTION

Heart is a muscular organ. Situated in the thoracic cavity It has a size of clenched fist. Protected by double layered

membrane called pericardium.

OUTER STRUCTURE OF HEART

Heart is conical in shape. Protected by double layered

membrane-Pericardium. The space between two layers

are filled with pericardial fluid .

FUNTIONS OF HEART

Pumping the blood to various parts of body for circulating nutrients and oxygen.

Blood pumped to lungs for purification.

INNER PARTS OF HEART

Four chambered – two Atria , two ventricles

Superior and inferior vena cava Aorta Pulmonary artery Pulmonary vein Tricuspid valve Bicuspid valve

AORTA

Largest blood vessel carry oxygenated blood to various parts of the body

PULMONARY ARTERY

Blood vessel carry deoxygenated blood from right ventricle to lungs for purification

PULMONARY VEIN

Blood vessel carry oxygenated blood from lungs to left atrium.

VENA CAVA

Veins carry deoxygenated blood from various body parts to right atrium.

1.Superior vena cava2. Inferior vena cava

CONCLUSION

Heart pump blood to all parts of the body . It work as a pump . The structure of heart is well suitable for it’s function . Higher organisms have complex blood vascular system compared to lower organisms

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