Transcript Dub The Heart


Functions:
› Transports oxygen and glucose to the cells to produce
energy
› Picks up waste such as carbon dioxide from the cells
› Transports the white blood cells to fight infection

Major organs of the circulatory
system are:
› heart
› blood vessels
› blood.
Circulation
The heart is a hollow muscular organ that
can hold and pump blood when the
muscles of the heart contract.
 The Heart

Lub
If you listen to
your heartbeat, it
makes a lub dub
sound.
The lub is when blood
is pushed out of the
heart into the body and
the dub is the reloading
of the heart with more
blood ready to push it
out to the body
Dub
The
Heart
› 4 chambers ( or compartments )
 2 upper chambers : Left Atrium
Right Atrium
 2 lower chambers : Left Ventricle
Right Ventricle
The Heart

Carries nutrients, water,
oxygen and waste
products to and from
your body cells.

Pumped by your heart.
http://hes.ucf.k12.pa.us/gclaypo/circdia.html

Components of Blood:
red cells and white
cells
› Red Blood Cells: the
ability to carry oxygen
and carbon dioxide in
and out of body cells.
› White Blood Cells: have
the ability to fight
infection.

Arteries: carry blood away from the
heart and must have thick, muscular
walls that can withstand pressure of
blood pumped by the heart.

Capillaries : Have walls that are only
one cell thick to allow materials to
be exchanged between the blood
and the body’s cells.

Veins : carry blood back to the heart
and are not as muscular as arteries
because the pumping pressure of
the heart has little effect by the time
the blood is in the veins.
http://users.tpg.com.au/users/amcgann/body/circulatory.htm
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