CirculatorySystemsmartboardfile.notebook
The Circulatory System
Circulatory system song- teachertube
November 18, 2014
Job Description:
Name: Circulatory System or
cardiovascular system
Occupation: body's
transportation system
Made up of: heart, blood, and blood vessels
Why I am important: I move food and
oxygen to each cell in the body. I also take away
cell's waste.
Introduction to the circulatory system
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The cardiovascular system is made up of vessels
and muscles that control the flow of the blood
around the body. This is called circulation.
Blood
Veins bring
oxygen rich
blood to the
heart,
arteries take
away CO2
rich blood
Circulation song
Jan 29­12:13 PM
Jan 29­10:25 AM
Plasma
Inside blood
liquid part of blood that carries nutrients from the
digestive system and moves chemicals throughout
the body
centrifuge
Blood is thicker than water and has a little bit salty
taste. In an adults body there is 10.6 pints of blood
circulating around. In their blood there is billions of
living blood cells floating in a liquid called
plasma.
If you took a small sample of blood and poured it
into a test tube and then put it in a machine called
a centrifuge, you would be able to see the layers of
blood. This machine spins the blood around so fast
that it separates the red blood cells, from the white
blood cells, from the platelets. The red blood cells
sink to the bottom because they are the heavier, more
solid parts, but the plasma remains at the top
because it is lighter.
Inside our blood
Let's make our own blood soup!
Jan 31­1:06 PM
Jan 29­10:27 AM
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CirculatorySystemsmartboardfile.notebook
Types of blood cells
November 18, 2014
Types of blood vessels
Red blood cells:
Form- shaped like discs with a dimple on each side
Function- to carry oxygen
White blood cells:
Form- different sizes and
shapes
1. Arteries: carry blood Away from the heart
Function- protect body from germs
2. Veins: carry blood to the heart
Platelets:
3. Capillaries: Connect arteries and veins
Form- irregular shapes
Cool fact about capillaries:
Function- form sticky blood
clots
They are the smallest blood vessel, they are so
thin that red blood cells can only pass through
them single file! That's thin!
Jan 29­10:37 AM
Jan 29­10:55 AM
Understanding blood vessels
Q: What is the easiest way to tell blood vessels
How do you think blood
apart?
strongest muscle in your body
divided into 2 sides
might move through each of
these differently?
A: Size
Arteries
The Heart
Veins
Capillaries
Right side: Pumps blood
to your lungs to pick up
oxygen
Left side: pumps
oxygen soaked
blood to your body
See the heart pump
Now, obviously the arteries are not the size of a paper towel
roll, or they wouldn't fit in your body. But if you can
imagine the artery being the size a paper towel roll, the
veins would be the size of a 1 inch tube, and the capillaries
would be the size of a straw.
Jan 30­3:21 PM
4 chambers of the heart
Pump your blood- Happy Days
The heart is made up of four different blood-filled
areas, and each of these areas is called a chamber.
There are two chambers on each side of the heart.
One chamber is on the top and one chamber is on the
bottom.
They do not work on their own, but together as a
team. The body's blood is circulated through the
heart more than 1,000 times per day. Between five
and six thousand quarts of blood are pumped each
day.
Jan 29­12:21 PM
The Heart's job
Your heart's job is to pump blood around your body.
Its muscles contract and squeeze out blood. The lefthand side pumps blood from the lungs to the rest of
your body. The right-hand side pumps stale blood
from your body back to your lungs for a fresh
supply of oxygen.
As blood begins to circulate, it leaves the heart
from the left ventricle and goes into the aorta.
Find #4,
follow the
red arrows
up to the
arch of the
aorta and
follow it
down along
the side of
the heart to
the bottom
of the aorta
Atria- 2 chambers on top
Atrium- 1 of the 2 chambers on top
The aorta is the largest artery in the body
The atria are the chambers that fill with blood
returning to the heart from the body and lungs. The
heart has a left atrium and a right atrium.
Ventricles- The two chambers on the bottom
The heart has a left and a right ventricle
Their job is to squirt out the blood to the body and
lungs.
1. Real human heart pumping: if you're squimish you
might want to close your eyes.
2. Bill Nye- The heart
Jan 30­1:08 PM
The blood leaving the aorta is full of oxygen. This is
important for the cells in the brain and the body to do
their work. The oxygen rich blood travels throughout
the body in its system of arteries into the smallest
arterioles.
See what the heart does as you exercise
Click on the grey Overview tab, and follow through to the pumping
action. Stop after pumping action.
Jan 29­12:41 PM
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CirculatorySystemsmartboardfile.notebook
Heart Valves
Valves work to keep
the blood flowing
forward: opening to let
it move ahead, closing
quickly so it doesn't
go backward.
November 18, 2014
Q: Is our blood blue inside our
body?
Take a class vote...stand if you
think yes, sit if you think no.
And the answer is.....
NO!
Your skin refracts light, so that deep
maroon color of your blood, appears a
little blue from outside your skin.
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