The circulatory system consists of the heart, blood vessels, and blood. The heart pumps blood through the blood vessels to deliver oxygen and nutrients to cells and pick up waste. It has four chambers - two collecting chambers called atria and two pumping chambers called ventricles. Deoxygenated blood enters the right atrium from the body and is pumped to the lungs by the right ventricle. Oxygenated blood returns to the left atrium from the lungs and is pumped by the left ventricle throughout the body. Blood contains plasma and blood cells including red blood cells, which carry oxygen, white blood cells, which fight infection, and platelets, which help with clotting.

1. CIRCULATORY
SYSTEM
Prepared by:
MARICARR D. ALEGRE

2. Circulatory System
• Also known as the body’s transport system
• Its main function are to deliver food and oxygen
to the cells and to pick up the cells waste
material and carbon dioxide
• It is consist of the
• Blood
• Blood vessels
• Heart

3. The HEART

4. • A muscular pump located between the
lungs and above your diaphragm
• It can pump up to 10,000 liters of blood
daily
• It can contract and relax 70 times a minute
• In average persons life the heart can beat
2.5 billion times

5. Parts and Functions
of the Heart

7. PERICARDIUM
• Protective membrane that
surrounds the heart
• Its just like the skin of the
heart

8. Chambers of the Heart

9. CHAMBERS OF THE HEART
• 1. ATRIA
• The collecting chambers of the heart
(a)Right atrium
(b)Left atrium
2. VENTRICLE
pumping chamber of the heart
(a) right ventricle
(b) left ventricle

10. ATRIUM
1.RIGHT ATRIUM
- collects blue unoxygenated blood
from the body
2. LEFT ATRIUM
- collects oxygenated blood from
the lungs

11. VENTRICLE
1. RIGHT VENTRICLE
- pumps unoxygenated
blood to the lungs for
oxygenation
2. LEFT VENTRICLE
- pumps oxygenated
blood to the different parts of
the body

12. MAJOR BLOOD VESSELS ON THE
HEART
1. SUPERIOR VENA CAVA
- located at the upper part of the heart which
serves as the passage way of unoxygenated
blood from your head and arms
2. INFERIOR VENA CAVA
- located on the lower part of the heart which
is the pathway of unoxygenated blood from the
lower part of the body

13. MAJOR BLOOD VESSELS ON THE
HEART
3. PULMONARY ARTERY
- carries deoxygenated blood from the right
ventricle to the lungs
4. PULMONARY VEIN
- brings back oxygenated blood from the
lungs to your heart
5. AORTA
- the largest artery in your body

14. VALVES
• Prevents the backflow of blood
(a)TRICUSPID VALVE
- between the right atrium and right
ventricle
(b) BICUSPID VALVE
-between the left atrium and left
ventricle

15. VALVES
( C ) PULMONARY SEMILUNAR
VALVE
- between the right ventricle and
the pulmonary artery
( d ) AORTIC SEMILUNAR VALVE
- between the left atrium and aorta

16. SEPTUM
• muscular wall that divides the
heart into left and right
• Prevents the crossing of blood

17. THE BLOOD

18. • It circulates throughout the body,
feeding, supplying and even
defending the cells or tissues that
make up your body
• Your blood consist of the liquid part,
plasma, and the solid components,
blood cells

20. BLOOD PLASMA
• It comprises 50 to 60 percent of your
blood
• The clear yellowish liquid part is
called the serum
• It transports your blood cells
particularly the red blood cells
• It also contains an antibodies which
protect your body from infection

21. BLOOD CELLS

23. RED BLOOD CELLS
• Also called erythrocytes
• Very small, round disc shape cell
which are thinned out at the
center
• It is formed in the bone marrow
• It contains hemoglobin which
gives it the red color

24. RED BLOOD CELLS
• It is the one responsible for
carrying the oxygen to the
different parts of the body and
picking up the carbon dioxide
• It also contains an antigens which
determines the blood type

26. WHITE BLOOD CELLS
• Also called leucocytes
• They protect the body
against foreign invading
substances like bacteria

27. WHITE BLOOD CELLS
2 TYPES
1. PHAGOCYTES – engulf foreign
substances
2. LYMPHOCYTES – produce
antibodies to attack your body
enemies

29. PLATELETS
• Also called thrombocytes
• It helps to plug leaks in
broken capillary walls
• For tissue repair

30. BLOOD VESSELS

32. 1. ARTERY – carry the blood away from the
heart
2. VEINS - carry the blood towards the
heart
3. CAPILLARIES - conjunction between
them
- the smallest blood vessel

33. BLOOD TYPES

34. Blood Type A Type B Type Type O
Recipie AB
nt
Type A ( has No clumping clumping clumping No clumping
anti-B)
Type B ( has clumping No clumping clumping No clumping
anti-A)
Type AB No clumping No clumping No clumping No clumping
(neither A
nor B)
Type O (both clumping clumping clumping No clumping
anti A and B)