Inside the heart,
there are four clearly separate sections or
chambers. The right side of the heart, consisting of
the right atrium and right ventricle, receives
oxygen-poor blood. On the left side of the heart,
the left atrium and left ventricle receive
oxygen-rich blood.
STATISTICS
FUNCTION
ANALYSIS
·
Weight: Less than .45 Kg (one pound) · Length: 13 Cm (5
inches) · Width: 9 Cm (3.5
inches)
Muscular pump sending blood
to all parts of the body though a highly intricate network
of blood vessels called capillaries.
The heart beats on average
70 times every minute and 100,000 times a day without
rest.
Exercising the Heart
Your
heart can pump up to five times more blood to
the body every minute when you exercise. The
amount of blood leaving the heart each time it
pumps increases by 10 to 35 percent. Also, the
number of times the heart beats per minute (the
heart rate) can more than double its normal
count. These changes are recorded on a chart
like the one shown.
MEASURING YOUR PULSE
1)
Press the fingertips of your right hand onto
the left side of your upturned wrist. Move
your fingertips slightly until you feel the
pulse.
2)
Take a seat and count the number of pulses
that you can feel for 30 seconds. Double this
figure for finding your resting heart rate.
3)
Next, run in place for about one minute. Stop,
then count the number of pulses for 30
seconds. Double this figure for your active
heart rate.
Your
heart beats
more than once a second every day of your life. As
blood flows into your heart, the muscles contract,
and the blood flows out again. The heart is made of
a special muscle which never tires. This muscles
contracts and relaxes 60 to 80 times a minute and
during exercise the rate can increase to over one
hundred times per minute.
Your
heart beats
more than once a second every day of your life. As
blood flows into your heart, the muscles contract,
and the blood flows out again. The heart is made of
a special muscle which never tires. This muscles
contracts and relaxes 60 to 80 times a minute and
during exercise the rate can increase to over one
hundred times per minute.
