Download Ch. 11/12 Powerpoint

Circulatory System
System that
transports
materials around
the body.
An airplane is a pickup/delivery system
The Circulatory System
is a pick up and delivery system

Picks Up:
–?
–?
–?
–?

Delivers:
–?
–?
–?
–?
Long thought to be
the center of passion
and love, the heart is
only the world’s
greatest ...
Pump!
About the size
of a large fist,
the heart is a
muscle with
5 large blood
vessels
carrying blood
to and from
the body.
Major
Blood
Vessels
Muscle
The heart is divided into
4 chambers:
Right
Atrium
Left
Atrium
Left
Ventricle
Right
Ventricle
The left side
The right side receives clean
receives dirty blood from the
blood from lungs and sends
the body and
it to the body.
sends it to
the lungs,
kidneys, and
liver(the
cleaners).
In between each
atrium and its
ventricle are one way valves.
One-way valves
also open out of
the ventricles to
blood vessels.
Your heart has been
beating since before you
were born and will beat
until the day you die.
Blood flow of the Heart
Atria have thin walls
because they only
pump blood down to
ventricles.
Ventricles have thick
walls because they
pump blood out of the
heart.
• Left ventricle
pumps all over the
body.
•Right ventricle
pumps to the lungs.
The heartbeat is controlled by
electricity from the nervous
system and hormones from the
endocrine system.
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 in to
heart. Thin walls, but
have one-way 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!

5 liters of blood continually pump
around the 60,000 miles of blood
vessels in your body, picking up
and delivering your daily needs.
Blood, the fluid of life
is really....
... a clear yellowish liquid with
red particles floating in it!
Blood is produced in
bone marrow- the center
of long bones
Parts of Blood
Plasma- clear,
nonliving liquid part
of blood. 55% of
blood. Carries food,
wastes, salt, and
chemicals.

Plasma
Parts of Blood
Red Blood Cellscarry O2 and CO2.
43% of blood.
contains hemoglobiniron substance that
carries the O2 and CO2.

Red
Blood
Cells
Parts of Blood
White Blood
Cells- fight
infections. 1% of
blood. larger cells
with nucleus.
Platelets- start
blood clotting.
1% of blood.

Blood Cells
Red Blood
Cells
WhiteBlood
Cells
Plasma
Platelets
Blood Types
There are 4 main types of
blood: A, O, B and AB.
What makes them
different is the kinds of
proteins found on the cell
membrane of their red
blood cells.
Why blood type is important?Mixing the wrong types of blood
together can cause clotting, health
problems and possible death.
the Circulatory
System...
... travels to all parts of the body
carrying digested food, oxygen and
other nutrients to our body cells. It also
picks up wastes from the body cells.
Blood Donation
Blood Pressure

ex. 120/80
Heart Attack