Transcript Circulation PPT

Circulatory System
System that
transports
materials
around the
body.
There are two sides of
each heart, a right side
and a left side.
•Each side has two
chambers:
•ATRIUM (Blood
enters)
•VENTRICLE
(blood leaves)
Right side
LEFT SIDE
Left
Atrium
Right
Atrium
Right
Ventricle
Left
Ventricle
The Right Side
Comes
from
body, goes to
lungs
Blood with little
O2 and much
CO2
The left side
Blood
comes
from lungs
and goes to
body
Carries less
CO2 and more
O2
Each chamber
contains VALVES.
Keep
blood from
flowing backwards
Between atria and
ventricles
Between ventricles
and arteries
When
the left
and the right
side work
together, it
forms a
continuous
cycle of blood!
Fast Fact!
The
average heart contracts 72
times a minute, moving 70 ml each
contraction.
This means the average heart
pumps enough blood in 1 year to
fill an Olympic size swimming
pool!
Your heart has been
beating since before you
were born and will beat
until the day you die.
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The heartbeat is
controlled by
electricity from the
nervous system
and hormones
from the endocrine
system.
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Blood Vessels are
...tubes that
carry blood
throughout the
body. Blood
does not leave
the vessels.
Types of Blood Vessels
Arteries- carries blood
away from heart. Thick
walls and have a pulse.
 Veins- brings blood
back to heart. Thin
walls, but have oneway valves.

Blood Vessel Types(cont.)
Capillaries- very small,
thin blood vessels.
Oxygen, food, wastes,
and other substances
pass in and out of the
capillaries. Every cell in
your body touches a
capillary!

Arteries..flow into capillaries..flow into veins
Fast Fact!
5 liters of
blood
continually
pump around
the 60,000
miles of
blood vessels
in your body!
Blood, the fluid of life
is really....
... a clear yellowish liquid with
red particles floating in it!
If you spin a test tube of blood enough, it will
separate into parts!
Parts of Blood
Plasma- clear
liquid part of
blood. 55% of
blood. Carries
water, food,
wastes, salt, and
chemicals.

Plasma
Parts of Blood
Red Blood Cellscarry O2 and CO2. 43%
of blood. contains
hemoglobin- a protein
with iron that carries
the O2 and CO2.

Red
Blood
Cells
FAST FACT!
One
milliliter of blood contains
about 5 million red blood cells!
Parts of Blood
White Blood Cellsfight infections. 1%
of blood. larger
cells.
Platelets- start
blood clotting. 1%
of blood.

FAST FACT!
White
blood cells have a life
span of a few days to a few
months, and are
outnumbered by RBC’s 700
to 1!