Download Circulatory System

Circulatory System
Your
Your
heart
heart
plays
plays
and
and
important
important
part
part
in in
being
being
healthy.
healthy.
It keeps
It keeps
all all
thethe
blood
blood
in in
your
your
circulatory
circulatory
system
system
flowing.
flowing.
Blood
Blood
helps
helps
oxygen
oxygen
getget
around
around
your
your
body.
body.
When
When
you
you
exercise
exercise
you
you
can
can
feel
feel
your
your
pulse.
pulse.
It tells
It tells
you
you
how
how
fast
fast
your
your
heart
heart
is pumping.
is pumping.
Your heart plays and important part in being healthy. It keeps all the blood in your circulatory system flowing. Blood helps
oxygen get around your body. When you exercise you can feel your pulse. It tells you how fast your heart is pumping.
Your
Your
heart
heart
Your heart
It is
It made
is made
of of
four
four
chambers;
chambers;
two
two
upper
upper
chambers
chambers
and
and
two
two
lower
lower
chambers.
chambers.
Blood
Blood
enters
enters
thethe
upper
upper
chambers.
chambers.
These
These
squeeze
squeeze
It push
is made
ofblood
fourinto
chambers;
twochambers,
upper
chambers
and
two
lower chambers.
Blood
enters
the
chambers.
and
and
push
thethe
blood
into
thethe
lower
lower
chambers,
which
which
then
then
squeeze
squeeze
and
and
push
push
the
the
blood
blood
outout
of upper
of
your
your
heart.
heart. These squeeze
and push the blood into the lower chambers, which then squeeze and push the blood out of your heart.
Ordering Activity
Ordering
Ordering
Activity
Activity
1. Your heart
first pumps blood to your lungs.
2. Here, the blood picks up oxygen from the air that you have breathed in.
1. 1. Your
Your
heart
heart
first
first
pumps
pumps
blood
blood
to to
your
your
lungs.
lungs.
3.Here,
The
blood
(carrying
then
travels
back
toyou
your
heart.
2. 2. Here,
thethe
blood
blood
picks
picks
upoxygen)
up
oxygen
oxygen
from
from
thethe
air
air
that
that
you
have
have
breathed
breathed
in.in.
4.The
The
heart
gives the
blood then
a second
push.
This
it’s
sent
to all the other parts of your body, including the brain, the
3. 3. The
blood
blood
(carrying
(carrying
oxygen)
oxygen)
then
travels
travels
back
back
totime,
to
your
your
heart.
heart.
muscles and all the other organs.
4. 4. The
The
heart
heart
gives
gives
thethe
blood
blood
a second
a second
push.
push.
This
This
time,
time,
it’sit’s
sent
sent
to to
all all
thethe
other
other
parts
parts
of of
your
your
body,
body,
including
including
thethe
brain,
brain,
thethe
muscles
muscles
and
and
all
all
the
the
other
other
organs.
organs.
5. The blood delivers oxygen to them all.
5. 5. The
The
blood
blood
delivers
delivers
oxygen
oxygen
to to
them
them
all.all.
6. The blood travels back to the heart, and it all begins again.
6. 6. The
The
blood
blood
travels
travels
back
back
to to
thethe
heart,
heart,
and
and
it all
it all
begins
begins
again.
again.
Heart & Pulse – sentence match up
Your heart is a very strong muscle…
…that pumps blood around your body.
The tubes that carry blood away from your heart are called….
….arteries.
The tubes that carry blood back to yourheart are called…
…veins.
Your pulse is a measure of…
…how fast your heart is beating.
Your heart beats faster or slower…
…depending on what you are doing.
When you exercise,…
…your heart beats more quickly.
Your lungs also work harder,…
…making you breathe more quickly to get more oxygen.
When you sleep,…
…your muscles need less oxygen, so your heart slows down.
Pulse facts
Your pulse is the number of beats your heart makes in one minute.
You can feel your pulse at certain points on your body. The easiest place to feel it is in your wrist, using the first two fingers of
your other hand.
When you sit, the average heart beats about 80 times per minute. However, everybody is different, so your pulse could be
higher or lower than this.
When you exercise, your heart beats more quickly. This is because your muscles are working harder and need more oxygen to
keep going.
Activities created using information from http://www.bbc.co.uk/bitesize/ks2/science