Download circulatoy system

Your heart and circulatory system
make up your cardiovascular system.
Your heart works as a pump that
pushes blood to the organs, tissues,
and cells of your body. If all the vessels
of this network in your body were laid
end to end, they would extend for
about 60,000 miles (more than 96,500
kilometers), which is far enough to
circle the Earth more than twice!
In this diagram, the vessels that carry
oxygen-rich blood are colored red, and
the vessels that carry oxygen-poor
blood are colored blue.
The circulatory system is the route
by which the cells in your body get
the oxygen and nutrients they
need, but the blood is the actual
carrier of the oxygen and nutrients.
Blood is actually a tissue made up
of a variety of cells, each having a
different job. Three main types of
blood cells circulate with the
plasma:
• Platelets
• White blood cells (leukocytes) ward
off infection
• Red blood cells
(erythrocytes) carry oxygen.
The heart muscle, like every
other organ or tissue in your
body, needs oxygen-rich
blood to survive. Blood is
supplied to the heart by its
own coronary circulation.
The aorta (the main blood
supplier to the body)
branches off into two main
coronary blood vessels (also
called arteries). These
coronary arteries branch off
into smaller arteries, which
supply oxygen-rich blood to
the entire heart muscle.
The circulatory system carries blood to
all parts of your body. Arteries carry
oxygen-rich blood away from your
heart, and veins carry oxygen-poor
blood back to your heart. In this
diagram of the torso, the vessels that
carry oxygen-rich blood are colored
red, and the vessels that carry oxygenpoor blood are colored blue.
In pulmonary circulation, though, the
roles are switched: the pulmonary
artery brings oxygen-poor blood
into your lungs and the pulmonary vein
brings oxygen-rich blood back to your
heart
A blood cell’s journey: The
blood cell moves from the right
atrium into the right ventricle and
then into the lungs, where it
absorbs oxygen. It travels
through the pulmonary vein to
the left atrium, then on to the left
ventricle and out the aorta. It
moves to a coronary artery,
branches off to an arteriole, and
finally through a capillary, where
it gives oxygen to a muscle cell
and absorbs carbon dioxide
(CO2) from the muscle cell. The
blood cell returns to the right
atrium where it is pumped into
the lungs to give off the CO2 and
absorb more oxygen.

Heart Attack Prevention For A
Healthier Future Thousands of
people throughout the world
suffer from a heart attack every
day and millions are at risk. Sadly,
the numbers are increasing but,
the good news is that it can be
prevented.
The key to preventing this deadly
disease later in life is to become
aware now, not later, because it
could be too late.
 Here are 2 simple steps that you
need to take to get started.
1. Learn what the risks of heart
disease are;
2. Eliminate some of those risks there are some risks that cannot
be avoided.
www.texas heart institute.org
 www.preventing-heart-attack.com
 www.sweethaven.com
 www.thehumananatomyorgans.com

BY INÉS UTRERO BORLAZ AND
 PAULA BERLANGA GARCÍA.
