This document describes the structure and function of the cardiovascular system. It details the major organs including the heart, arteries, veins and capillaries. The heart is described as having four chambers - two atria that receive blood and two ventricles that pump blood out. Blood moves through the heart chambers via valves between the atria and ventricles. Arteries carry oxygenated blood away from the heart while veins return deoxygenated blood back to it. Capillaries allow for the exchange of oxygen and nutrients with body tissues. In conclusion, the right side of the heart contains deoxygenated blood and the left side contains oxygenated blood, and the heart chambers work together to pump this blood throughout the body

2. New B.Ed College Nellimoodu
Name : Aneeja.S.Das
Subject : Natural Science
Candidate code : 181/13376002

3. The Cardiovascular System
Structure & Function

4. Organs of the Cardiovascular System
 Heart
 Blood vessels
 Arteries
 Arterioles
 Capillaries
Veins
 Venules

5. The Heart
 Muscular organ the size of
a fist
 Four chambers – L/R
Ventricles L/R Atria
 Endocardium- lines the
heart chambers
 Myocardium- muscle layer
 Pericardium- membranous
outer covering

6. Atria
 Right 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

7. 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.

8.  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

9.  Pulmonary valve
controls blood
movement from right
ventricle into pulmonary
artery
 The aortic valve
controls blood flow from
the left ventricle to the
aorta
Pulmonary
valve
Right
Atrium
Right
Ventricle
Left
Atrium
Left
Ventricle
Tricuspid
Valve
Mitral Valve
Aortic valve

10.  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

11. Arteries
 Arteries- tubes that
carry blood away from
the heart.
 Muscular elastic walls
 Form arterioles which
form capillaries
 Carry blood and
oxygen to the body
cells

12. Veins
 Veins- tubes that carry
blood toward the heart
 Thinner muscular
walls
 Carry blood back to
heart
 Cuplike valves to help
move blood

13. 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

15. 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