Transcript your circulatory system

YOUR CIRCULATORY
SYSTEM
How does it work?
Why does a doctor check your pulse and blood
pressure?
What is your blood type and why is it important?
The Transport System
• CIRCULATORY SYSTEM
– Your body’s transport system.
– Keeps the body working well.
• By delivering essential materials to body cells and
removing waste materials from the cells.
» THIS BODY SYSTEM IS ALSO KNOWN AS
THE CARDIOVASCULAR SYSTEM.
How the Circulatory System
works
• Blood carries
substances through
Circulatory System
• Organs serve as
transfer stations
– Blood picks up
nutrients and delivers
them to cells
• Wastes and removes
them from body
Parts of the Circulatory System
• Heart
• Blood Vessels
• Blood
HEART
•
Is a muscle that pumps,
and moves blood in 2
major pathways
1.
2.
Pulmonary Circulation
(Lungs to Heart and
back – Oxygen/Carbon
Dioxide)
Systemic Circulation
(Heart to Body and back)
HEART
• The heart is divided
into 4 chambers
– Each upper chamber is
called ATRIUM
– Each lower chamber is
called VENTRICLE
* VALVES open and
close to control the
flow of blood
Blood Vessels
• Over 80,000 miles of blood vessels move
your blood throughout your body
• Three types of blood vessels
1. Arteries
2. Veins
3. Capillaries
Arteries
Carry blood away from the heart
Veins
Carry blood back to the heart
Capillaries
Tiny tubes that carry blood from the
arteries to the body’s cells and from
cells to the veins
Blood
• A mixture of solids in
a large amount of
liquid called plasma
• BLOOD
•
•
•
•
Red blood cells
White blood cells
Platelets
Plasma
– Is about 92% water
Parts of Blood
• Red blood cells – carry oxygen to the cells
and carbon dioxide away from the cells.
• White blood cells – help fight disease and
infection by attacking germs that enter the
body
• Platelets – help blood clot, which seals cuts
and prevents excess blood loss from a
wound
More about Blood
•
•
•
Blood is essential to life
Your blood is not the same as everyone
else’s
Blood transfusions
–
–
Blood must match
Mixing blood could have serious side effects
•
High fevers, difficulty breathing, and even death
Blood Types
A
B
AB
O
BLOOD TYPE
• What's Your Blood Type.mht
Positive or Negative Blood
• Rh +
– Blood does contain Rh
factor
(Blood protein)
• Rh –
– Blood does not
contain Rh factor
(No blood protein)
(RH) FACTOR
• Rh factor in blood.doc
Blood Banks
• People of age can
donate blood
• Only people in good
health can donate
• A new needle is used
every time blood is
drawn
• All donated blood is
tested for disease
Blood Pressure
• As blood moves
through your body, it
exerts pressure
against the walls of
blood vessels
• Sphygmomanometer
– instrument that
measures blood
pressure
Cardiovascular Disorders
•
•
•
•
Stroke
Heart attack
Arteriosclerosis
Hypertension
– High blood pressure
•
•
•
•
•
Anemia
Sickle-cell anemia
Mononucleosis
Leukemia
Hemophilla
Cardiovascular Disorders
• Open to page 303
• Write the descriptions to each disorder in
your notes