WELCOME

New B.Ed College Nellimoodu

Name : Aneeja.S.Das

Subject : Natural Science

Candidate code : 181/13376002

The Cardiovascular SystemStructure & Function

Organs of the Cardiovascular System

HeartBlood vessels

ArteriesArteriolesCapillaries

VeinsVenules

The Heart

Muscular organ the size of a fist

Four chambers – L/R Ventricles L/R Atria

Endocardium- lines the heart chambers

Myocardium- muscle layerPericardium- membranous

outer covering

AtriaRight Atrium (RA)-

right upper chamber- receives blood from body- deoxygenated blood

Left atrium (LA)- left upper heart.- receives oxygenated blood from lungs and sends it to the left ventricle

Ventricles

Right ventricle- (RV)- right lower chamber- receives blood from right atrium and sends it to the lungs through pulmonary artery

Left Ventricle (LV)- lower left chamber- receives blood from left atrium and sends it through the aorta to the body.

Aorta: The main trunk of the systemic arteries, carrying blood from the left side of the heart to the arteries of all limbs and organs.

Pulmonary Artery carries blood to lungs

Right Atrium

Right Ventricle

Left Atrium

Left Ventricle

Aorta

pulmonary artery

Pulmonary valve controls blood movement from right ventricle into pulmonary artery

The aortic valve controls blood flow from the left ventricle to the aorta

Right Atrium

Right Ventricle

Left Atrium

Left Ventricle

Tricuspid Valve

Pulmonary valve

Mitral Valve

Aortic valve

Tricuspid valve controls blood flow between the right atrium and ventricle

Mitral valve controls blood movement between the left atrium and ventricle

Right Atrium

Right Ventricle

Left Atrium

Left Ventricle

Tricuspid Valve

Mitral Valve

ArteriesArteries- tubes that

carry blood away from the heart.

Muscular elastic wallsForm arterioles which

form capillariesCarry blood and

oxygen to the body cells

Veins

Veins- tubes that carry blood toward the heart

Thinner muscular walls

Carry blood back to heart

Cuplike valves to help move blood

Capillaries

Capillaries- tubes that connect arteries and veins

Walls only one cell thick

Site for exchange of nutrients and oxygen from blood cells and carbon dioxide and wastes to the blood

CONCLUSION

The chambers on the right side contain impure blood & those on the left side contain pure blood.

The right & left atria get filled with blood they contract together & the blood goes to the ventricles.

The ventricular contraction blood from the left ventricle enters the aorta & the blood from the right ventricle enters the pulmonary artery

THANK YOU