The circulatory system is a network of organs and vessels that transports nutrients, hormones, oxygen, and other gases throughout the body. It consists of two main circulatory systems - the cardiovascular and lymphatic systems. The cardiovascular system includes the heart, blood vessels, and blood. The heart is a muscular pump made up of four chambers that contract rhythmically to circulate blood. Blood is carried away from the heart through arteries and returns to the heart through veins. The smallest blood vessels, capillaries, connect arteries and veins and allow for the exchange of substances between blood and tissues. The lymphatic system works alongside the cardiovascular system to transport lymph throughout the body and helps fight infection and disease.

1. CIRCULATORY SYSTEM
Made by:-
Suryansh Jaiswal

2. CIRCULATORY SYSTEM
Circulatory System
Cardiovascular
System
Blood
Blood
Vessels
Arteries Veins Capillaries
Heart
Chambers Valves
Double
Circulation
Lymphatic
System
Lymph
Vessels
Lymph
Lymph
Nodes

3. The circulatory system works in
coordination with the other organ system.
The system is a vast network of organ and
vessel responsible for the transport of
nutrient, hormones, oxygen and other
gases to and from the cell through the
circulating fluid (called blood).
CIRCULATORY
SYSTEM

4. TYPES OF CIRCULATORY
SYSTEM
• Cardiovascular System
• Lymphatic System

5. The heart, blood and
blood vessels make up
the cardiovascular
component of the
circulatory system. It
includes pulmonary
circulation and systemic
circulation.
CARDIOVASCULAR
SYSTEM

6. PARTS OF CARDIOVASCULAR SYSTEM
• Blood
• Blood Vessels
• Heart

7. BLOOD
Blood is made of about 45% solids
(cells) and 55% fluids (plasma). The
general types of blood cells are
erythrocytes (Red Blood Cells),
leukocytes (White Blood Cells) and
thrombocytes (Platelets). Blood
circulates oxygen and removes
carbon dioxide.

8. BLOOD VESSELS
These are tube like structures that transports blood
through the whole body.
They are of 3 types :-
• Arteries
• Veins
• Capillaries

9. ARTERIES
These are muscular, thick-walled,
elastic vessels that carry blood
away from the heart. Arteries
carry oxygenated blood except for
the pulmonary artery which
originates from the right ventricle
and carries deoxygenated blood to
the lungs.

10. VEINS
These are thin walled vessels with a large
cavity which carry the blood towards the
heart. They carry deoxygenated blood
except for the pulmonary vein which
brings back oxygenated blood to the
heart, Valves are present at regular
intervals to prevent the backflow of
blood.

11. CAPILLARIES
These are extremely thin vessels which form a network around
the organs and tissues. Their walls are merely one cell thick.
They help in the diffusion of substances like nutrients and
gases.

12. HUMAN HEART

13. HUMAN HEART
The heart is the pumping organ of the circulatory system which pumps
blood through out the body. It is a muscular organ consisting of cardiac
muscles that contract rhythmically. These contractions are triggered by a
tissue called the pacemaker situated on the upper right side of the heart.
The heart is a triangular-shaped organ which is roughly the size of one's
closed fist. It is located in the thoracic cavity between the two lungs,
guarded by the ribcage. It is covered by a double membrane called the
pericardium. Between the two membranes of the pericardium lies the
pericardial fluid, which acts as a lubricating fluid and protects the heart
from shocks and injuries.

14. CHAMBERS OF THE
HEART
A longitudinal section of the heart shows that it is
composed of four chambers separated by septa
(singular: septum). The upper two chambers are the
right and left auricles or atria (singular: atrium).
These are the collecting chambers. The lower two
chambers are called the right and left ventricles.
These are the distributing chambers.

15. VALVES OF THE HEART
There are valves present in the heart
which prevent the backflow of blood.
A valve with three flaps, called the
tricuspid valve, is present between
the right atrium and the right
ventricle. It ensures that blood flows
in one direction, from the atrium
towards the ventricle.

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