1. The Circulatory System

2. The Cold Heart Facts
- The heart is a muscle
- The heart is a little larger than your clenched fist
- Your heart beats about 100,000 times in one day and about
35 million times in a year. During an average lifetime, the
human heart will beat more than 2.5 billion times.
- Give a tennis ball a good, hard squeeze. You're using about the
same amount of force your heart uses to pump blood out to the
body. Even at rest, the muscles of the heart work hard—twice as
hard as the leg muscles of a person sprinting

3. - The heart pumps about 1 million barrels of blood during
an average lifetime—that's enough to fill more than 3 super
tankers

4. The Definition
The bodily system
consisting of the heart,
blood vessels, and blood
that circulates blood
throughout the body,
delivers nutrients and
other essential materials
to cells, and removes
waste products -- Also
called the cardiovascular
system.

5. The Circulatory System
AKA the cardiovascular system
What it consists of:
- Heart
- Blood Vessels
- Blood
What it does:
- Circulates blood throughout the body
- Delivers nutrients to cells
- Removes waste products from cells

7. The heart, the lungs, and the blood
vessels work together to form the
circle part of the circulatory system.
Circulation
Travels through pulmonary arteries
Two parts to lungs where it gets fresh oxygen
Heart acts as double pump and becomes bright red
Blood from the right side Blood from lungs through
pump is dark red and low in pulmonary veins back to the heart's
oxygen (oxygen-poor) left side pump
Pumped out into the body

9. 3 Kinds of Circulation:
Pulmonary circulation
Coronary circulation
Systemic circulation

10. Pulmonary Circulation
Movement of blood from the heart, to the lungs, and back to
the heart again

11. Coronary Circulation
Movement of blood through the tissues of the heart

12. Systemic Circulation
Supplies nourishment to all of the tissue located
throughout the body, except for the heart and lungs

13. The Heart
A hollow muscular organ
that pumps the blood
through the circulatory
system by rhythmic
contraction and dilation.

14. The Four Chambers Of
The Heart
3.
Takes the used blood
1.
from the body that no Takes oxygen-rich blood from the
longer has oxygen and lungs and pumps it into the left
pumps it into the right ventricle
ventricle
4. 2.
Pumps the oxygen-less
blood into the lungs where it
picks up oxygen again Pumps the oxygen-rich blood through
the aorta which sends it out into the
body

15. Blood Vessels
- The part of the circulatory system that transports
blood throughout the body.

16. Three Types of Blood Vessels
1) Arteries: carry oxygen-rich
blood away from the heart Artery
2) Veins: carry blood containing
waste products to different
organs (kidneys, liver, etc.) and Capillaries
then back to the heart
3) Capillaries: enable the actual
exchange of water and chemicals
between the blood and the
tissues – for Vein
example…diffusion of oxygen
within the lungs

18. The Aorta
The largest artery in the
body, originating from the
left ventricle of the heart
and extending down to
the abdomen, where it
branches off into two
smaller arteries. The aorta
distributes oxygenated
blood to all parts of the
body.

19. Blood
The fluid that circulates in the heart, arteries, capillaries, and
veins of a vertebrate animal carrying nourishment and oxygen
to and bringing away waste products from all parts of the body.

20. The Bloody Truth
Blood consists of:
- Red blood cells: disk shaped cells that carry
oxygen to cells and carbon dioxide out
- White blood cells: cells that engulf and digest
bacteria and fungi; an important part of the
body's defense system
- Platelets: are blood cells that help stop bleeding.
- Plasma: straw-colored liquid component of blood. It
is mostly water (93% by volume) and contains
dissolved proteins, glucose, clotting factors, mineral
ions, hormones and carbon dioxide

21. The Lymphatic System 6.)
– a system
of transporting vessels
designed to collect fluid
& proteins that leak out
of the capillaries and
return them to the
blood stream proper.
***(note – the “fluid collection” system of the body)

22. Fluid (mostly water) leaks out of the capillaries due to the high
pressure within the blood vessels (arteries & capillaries). That fluid
needs to be recovered and returned to the blood volume or it will
build up in the tissue spaces. Muscle movements and the force
produced by the heart “run” the lymphatic system.
(***note – this is the lymphatic systems connection to the circulatory system)

24. Blood is the main transport medium
of the body. It “carries” everything
we need for life from one point in the
body to another. Because of this, blood
is considered the most important factor
in maintaining homeostasis.

25. 1.) Blood transports oxygen (O2) from the
lungs to the cells of the body.
2.) Blood transports carbon dioxide (CO2)
from the cells of the body to the lungs.
3.) Blood transports nutrients from the
digestive tract to the cells of the body.
4.) Blood transports waste products from
the cells of the body to the liver &
kidneys.

26. 5.) Blood transports water (H2O) from the
digestive tract to the cells of the body.
6.) Blood transports white blood cells &
antibodies to fight infection.
7.) Blood transports platelets & fibrin to
form clots which begins healing.
8.) Blood transports hormones from their
production sites to target sites
elsewhere in the body.

27. 9.) Blood transports heat from the
muscles of the body to the surface
of the skin & the lungs.
10.) Blood transports the body’s buffering
system which allows the body to resist
pH changes.

28. A Healthy Heart is a Happy Heart
1. Exercise on a regular basis.
Get outside and play. Keep
that body moving (walk,
jog, run, bike, skate, jump,
swim).
2. Eat Healthy. Remember the
Food Pyramid and make
sure your eating your food
from the bottom to top.
3. Don't Smoke! Don't Smoke!
Don't Smoke! Don't Smoke!
Don't Smoke!

29. Video
http://www.youtube.com/watch?v=DAXa4eR1s0M

30. Homework
Option 1) Write an essay that details a day in the life of
a red blood cell as it travels through the circulatory
system … where did you go and what happened
Option 2) Draw the circulatory system and point out
the three different types of blood vessels, the heart and
its chambers, the lungs, and red blood cells.