Human Circulatory System Components- 1.Blood 2.Blood Vessels 3.Heart

1. THE
CIRCULATORY
SYSTEM

2. FUNCTIONS OF THE
CIRCULATORY SYSTEM
• Transport of oxygen and nutrients
• Removal of carbon dioxide and waste
• Immune system support
• Hormone delivery
• Regulation of body temperature

3. COMPONENTS OF
THE CIRCULATORY
SYSTEM
BLOOD
BLOOD VESSELS
HEART

4. BLOOD

5. COMPONENTS OF THE BLOOD
BLOOD CELLS
PLASMA

6. Function Main Parts
Has three main parts: the
heart, blood vessels and
blood
FUNCTIONS OF THE BLOOD COMPONENTS
Overview of the major components: heart, blood vessels, and blood
COMPONENT FUNCTION
PLASMA
(FLUID IN WHICH CELLS ARE
SUSPENDED)
HELPS IN TRANSPORTATION OF
SUBSTANCES LIKE FOOD, GASES ETC.
RED BLOOD CELL CONTAINS RED COLOUR PIGMENT
CALLED HAEMOGLOBIN WHICH HELPS
IN TRANSPORTATION OF OXYGEN
WHITE BLOOD CELL CELLS HELP IN FIGHTING AGAINST
GERMS
PLATELETS HELPS IN CLOTTING OF BLOOD

7. BLOOD VESSELS

8. TYPES OF BLOOD
VESSELS

9. TYPES OF BLOOD VESSELS
ARTERIES
•Carries oxygen
rich blood
•Carries blood
away from the
heart
•Valves are
absent
•Thick walls
VEINS
•Carries carbon
dioxide rich
blood
•Carries blood
towards the
heart
•Valves are
present
•Thin walls
CAPILLARIES
• On reaching the
tissues, artery divides
further into
extremely thin tubes
called capillaries. The
capillaries join to
form veins which
empty into the heart.
• Function- Exchange
of gases and
nutrients

10. HEART

11. LOCATION OF
HEART
The heart is located in
the chest cavity with its
lower tip slightly tilted
towards the left.

12. SIZE OF THE
HEART
Your heart is
roughly the size
of your fist.

13. MUSCLES OF
HEART
Made up of cardiac
muscles
The heart is an organ which
beats continuously to act as
a pump for the transport of
blood, which carries other
substances with it.

14. STRUCTURE OF HEART
Right
atrium
Left
atrium
Right
ventricle Left
ventricle
Dividing
Wall
• 4 chambered heart
• Right side and left side of heart
completely separated by a partition
which helps to avoid mixing up of
blood rich in oxygen with the blood
rich in carbon dioxide
• Upper two chambers-atrium
• Lower two chambers-Ventricles
• Atrium and ventricle of same side
separated by valves

15. FUNCTION OF
HEART
right ventricle
left ventricle
Dividing
wall
The heart is an organ
which beats
continuously to act
as a pump for the
transport of blood
which carries other
substances with it.

16. FUNCTION OF
VALVE
right ventricle
left ventricle
Dividing
wall
Valves allows the blood
flow to flow in one
direction only.
They prevent the
backflow of the blood.

18. PATH OF THE
BLOOD
THROUGH THE
BODY

21. • This rhythmic contraction followed by
its relaxation constitute a heartbeat
• The throbbing in the arteries due to the
blood flowing in them is called the
pulse.
• The number of beats per minute is
called the pulse rate.
• A resting person, usually has a pulse
rate between 72 and 80 beats per
minute.
• Each heart beat generates one pulse in
the arteries and the pulse rate per
minute indicates the rate of heart beat.
PULSE RATE AND HEART RATE

22. • A doctor uses the stethoscope as a device to amplify the
sound of the heart.
• It consists of a chest piece that carries a sensitive diaphragm,
two ear pieces and a tube joining the parts.
STETHOSCOPE

23. Heart
Muscular
organ that
has four
chambers
Pumps blood
around the
body
Blood
Has four
components:
plasma, red blood
cell, white blood cell
and platelets
Carries oxygen,
nutrients and
wastes
Blood Vessels
Has three
types:
arteries, veins
and
capillaries
Serve as
channels for
The circulatory system delivers oxygen and nutrients
to the body, while also removing wastes.
A RECAP

24. THANK YOU
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