Download Heart Facts

The Cardiovascular System
123rf.com
Where is your heart located?
Many people think their heart is located on the left side of their chest. It is
actually located almost in the center of the chest, between the lungs. It’s
tipped slightly so that part of it sticks out and taps against the left side of the
chest, which is what makes it seem as though it is located there.
shadygroveadventisthospital.com
How big is the human heart?
About the size of
your fist.
my2ndheartbeat.wordpress.com
Whoa….my heart beats how many times???
One day: 100,000 beats
One year: 35 million beats
Lifetime: > 2.5 billion beats
http://my2ndheartbeat.wordpress.com/2011/09/15/daily-insight-36/
Your heart is one hard working muscle!
The force you use
to squeeze a
tennis ball is
about the same
amount of force
your heart uses to
pump blood out
to the body.
Even at rest, the
muscles of the
heart work hardtwice as hard as
the leg muscles of
a person sprinting.
bodyroxleduc.ca
Time to take our pulse
As a kid, your resting pulse should be between 70-110 beats per minute.
sciencebuddies.org
The Cardiovascular System
heart
The circulatory system is a body system that includes the ________________,
blood
blood vessels
___________________, and _________________________________.
food
oxygen
Its main job is to transport _______________ and _________________ to cells
wastes
in the body. It also picks up _______________ to be eliminated from the body.
deskarati.com
THE HEART:
hollow
The heart is a _________________,
muscular organ. Its main function is to
pump ______________________
blood
______________
throughout the body.
The human heart contains four chambers:
right atrium
1) __________________________________________
right ventricle
2) __________________________________________
left atrium
3) __________________________________________
left ventricle
4) __________________________________________
Valves
___________________:
open and close to allow blood to flow in only one
direction through the heart.
inspirations786.wordpress.com
THE BLOOD VESSELS:
tubes in the body through which blood _______________.
flows
Blood vessels are ___________
Arteries
_______________________________:
a type of blood vessel that carries blood
away from the heart.
Veins
_______________________________:
a type of blood vessel that carries blood to
the heart.
Capillaries
______________________________: the smallest kind of blood vessel through which
materials are exchanged between blood and body cells.
BLOOD:
fight
White blood cells _________________
infection and kill germs.
oxygen
Red blood cells deliver ___________________
from the lungs to the rest
of the body and transport carbon dioxide from the body to the lungs.
clot
Platelets are small blood cells that help blood to _______________,
or
stop bleeding.
Plasma
_________________ is a straw colored liquid component of blood that
normally holds the blood cells. It makes up about 55% of the body's
total blood volume.
Circulatory System
Video Links
http://www.pbs.org/wgbh/nova/body/map-human-heart.html
http://www.sciencekids.co.nz/videos/humanbody/heart.html
MovieSource: The Circulatory System
Circulatory System - Kids Science Videos, Games and Lessons that
Make Learning Fun and Easy
http://studyjams.scholastic.com/studyjams/jams/science/humanbody/circulatory-system.htm