Transcript Circulatory System Power Point

Circulatory System
Chapter 3, Lesson 1- by Shay Traywick
What is the circulatory system?
• The circulatory system
moves materials around
the body
• Think of it like your body’s
“transportation system”
• The circulatory system
moves food and oxygen
to the cells and takes
away the cells’ waste
What are the parts ?
• Heart
• Blood
• Blood vessels
What is blood made up of?
• Blood contains:
–
–
–
–
Plasma
Platelets
Red blood cells
White blood cells
Plasma (in the blood!)
• The biggest part of your
blood is a straw-colored
liquid called Plasma:
– Carries food from
digestive system to
your cells
– Carries away cells’
waste
– Takes water to the
cells
– Moves some chemicals
from one part of the
body to another
Red Blood Cells (also in blood!)
• The next largest parts
of your blood are Red
Blood Cells:
– Red blood cells carry
oxygen to cells
White Blood Cells & Platelets
(last 2 parts of the blood!)
• White blood cells
work hard to protect
your body from
germs, etc.
– When the body needs to
fight infection, it makes
more white blood cells
• Platelets cause blood
clots to form,
minimizing loss of
blood from cuts
3 Kinds of Blood Vessels
(think of blood vessels as highways your blood uses to move through the
body!)
• Arteries
• Capillary
• Veins
– Valves
LOOK AT PICTURES
ON pg. 66 & 67
Arteries (a kind of blood vessel)
• Arteries are blood
vessels that carry
blood AWAY from
your heart
Veins & Valves
(still part of blood vessels)
• Veins are blood
vessels that take
blood from cells
BACK
to the heart
• Valves are flaps that
act like doors that
keep blood flowing in
1 direction.
Capillaries
(still part of blood vessels!)
• Capillaries are the
smallest blood
vessels, very thin
walls
• Capillaries joint
together to from your
tiniest veins
The heart has parts???
• Your heart has 4
chambers
• The upper part of
each side is the:
atrium
• The lower part is
called: ventricle
Tell me more about the HEART
• Right side- collects
blood that has
circulated through the
body and pumps it to
the lungs
• Left side- collects
oxygen-rich blood
from the lungs &
pumps it to the
arteries
Let’s Review what we learned…
• What is the circulatory system?
• What makes up the circulatory system?-3
things
• What makes up blood?-4 things
• What kind of blood vessels did we
discuss?- 3 kinds
• Tell me how the heart is divided?
• What is the circulatory system like that we
can compare it to???
Study Study Study!!
• Check out the great pictures in your text…
• Do you have any questions????