circulatory system

1. CIRCULATORY
SYSTEM

2. 1. What do you think does each part of the
constructed lung model represent?
• plastic bottle =
•Two straws =
•Two balloons =
•Larger balloon =
CHEST CAVITY
LUNGS
BRONCHI
DIAPHRAGM

3. 2. What happens as you pull down the
balloon at the bottom of the model?
•The two balloons expand
•The air pressure inside the bottle is lowered by
increasing the space inside the bottle. The outside
air then enters through the tube, which makes the
two balloons inside the bottle 'chest' expand

4. 3. What happens as you push up the
balloon?
• The two balloons loosen up and return to their original
size.
• The air pressure inside the bottle is increased by
decreasing the space inside the bottle. The inside air
then exits through the tube, which makes the two
balloons inside the bottle return to their original size.

5. 4. How does the movement of the
diaphragm cause the air to go in and out of
the lungs?
•The movement of the diaphragm affects the air
pressure inside the chest cavity by either decreasing
or increasing the space, thus allowing air to go in
and out of the lungs.

6. 5. What might happen if you prick the balloon?
•If one of the balloons is pricked, it
will not inflate anymore because the
air will escape.

7. CIRCULATORY SYSTEM
•Also known as Cardio-vascular system
•Life support and structure that nourishes
your cells
•Functions with other body system to deliver
different materials in the body

8. Parts of the Circulatory System
•HEART – pumps blood throughout the body
•BLOOD VESSELS – carries the blood
throughout the body
•BLOOD – carries the materials throughout the
body

9. Types of Blood Vessels
•VEINS – carry blood toward the heart
•ARTERIES – carry blood away from the heart
•CAPILLARIES – smallest blood vessel in the
body connecting the smallest veins and arteries

10. COMPONENTS OF BLOOD
Plasma
is the main component of blood and consists
mostly of water, with proteins, ions, nutrients, and
wastes mixed in.

11. PLASMA
Plasma, the liquid component of
blood, can be isolated by
spinning a tube of whole blood
at high speeds in a centrifuge.
The denser cells and platelets
move to the bottom of the tube,
forming red and white layers,
while the plasma remains at the
top, forming a yellow layer.

12. COMPONENTS OF BLOOD
Red blood cells
are responsible for carrying
oxygen and carbon dioxide.

13. Red blood cells, or erythrocytes, are specialized cells that
circulate through the body and deliver oxygen to tissues.
In the lungs, red blood cells take up oxygen, and as they
circulate through the rest the body, they release the oxygen to
the surrounding tissues.
Old or damaged red blood cells are broken down in the liver
and spleen, and new ones are produced in the bone marrow.

14. RED BLOOD CELLS (RBC)

15. COMPONENTS OF BLOOD
PLATELETS
are responsible for blood
clotting

16. •Platelets, also called thrombocytes, are
cell fragments involved in blood
clotting.
•When the lining of a blood vessel is damaged
(for instance, if you cut your finger deeply
enough for it to bleed), platelets are attracted to
the wound site, where they form a sticky plug.

17. PLATELETS

18. COMPONENTS OF BLOOD
WHITE BLOOD CELLS
are part of the immune system
and function in immune response.

19. •White blood cells, also
called leukocytes, are much less
common than red blood cells and
make up less than 1%, percent of
the cells in blood.

20. WHITE BLOOD CELLS / WBC

21. A-B-O BLOOD GROUP SYSTEM

22. Size of Heart
•Hollow muscle which
is as big as your FIST

23. 4 CHAMBERS OF HEART
• The two atria are the receiving chambers of the heart,
accepting from the body and from the lungs.
• The two ventricles are the pumping chambers, moving
blood to the lungs and into the body.
• There is a valve between each atrium and ventricle to
prevent the blood from flowing backwards. These are one
way doors – keep the blood from moving only in one
direction.

24. Parts of the Heart

25. Superior vena cava
Inferior vena cava
Pulmonary Vein
Pulmonary Artery

27. Types of Circulation
• Pulmonary Circulation – movement of blood from
the heart to the lungs and back to the heart
• Coronary – movement of blood through the tissues
of the heart
• Systemic – movement of blood from the heart, to the
rest of the body, excluding the lungs.