Download circulatory system

CIRCULATORY SYSTEM
8th Grade Health
Do Now Journal
• With what you know about
Cardiovascular concerns today, what
would be your message to those
around you that you care about on
the importance of Good
Cardiovascular Health?
Circulatory System Study Guide - Preview
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The circulatory system is made up of these 3 parts:
1.Heart
2.Blood Vessels
3.Blood
The major function of the circulatory system is to:
Role of the different components of blood:
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– Plasma- Platelets- White Blood Cells- Red Blood CellsThis protein in RBC’s allows oxygen & carbon dioxide to attach to the RBC so it may be
carried throughout the body:
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Hemoglobin
Tiny blood vessels where materials such as oxygen, carbon dioxide, nutrients, &
waste products enter & leave the bloodstream:
Capillaries
Also know as high blood pressure:
Hyper-tension
A cancer of the tissues of the body that produce white blood cells:
Leukemia
Valve between the left atrium & left ventricle:
Mitral
Largest artery in the body:
Aorta
Superior vena cava’s function VS. Inferior vena cava’s function:
Blood leaving the heart from the right ventricle goes to the Lungs
by way of
the Pulmonary Artery
Circulatory/Cardiovascular
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Make a fist.
Open the fist
Now make a fist and open it as quickly as you can.
Now repeat that procedure for One minute.
Now how does your hand and fingers feel?
Now think about an organ in your body that never
fatigues and works so hard that it pumps 2,000
gallons of blood everyday through out your body!
• The topic of the day is the heart and the rest of the
circulatory system that is essential to life.
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Superior vena cava
Aorta
Pulmonary artery
Pulmonary valve
Pulmonary veins
Right atrium
Left atrium
Tricuspid valve
Left ventricle
Mitral valve
Right ventricle
Inferior vena cava
septum
Aortic valve
Chambers of the Heart- heart is divided
into 4 chambers [rooms]
• Right Atrium - right upper chamber, receives
oxygen-poor/depleted blood (CO2) from the body
through the inferior vena cava & superior vena
cava
• Right Ventricle- lower chamber, pumps blood
into the pulmonary artery
• Left Atrium – left upper chamber, receives
oxygen-rich blood from the lungs via the
pulmonary vein
• Left Ventricle – left lower chamber, pumps blood
through the aortic valve into the aorta
Veins and Arteries – move the blood in and
out of the heart and around the body
Arteries – a blood vessel carrying blood
away from the heart
Veins – a blood vessel carrying blood back
to the heart
Veins and Arteries
• Aorta – biggest and longest artery, carries oxygen-rich
blood from the left ventricle to the body
• Pulmonary artery – carries oxygen-poor blood from the
right ventricle to the lungs
• Pulmonary vein – carries oxygen-rich blood from the
lungs to the left atrium
• Superior vena cava – carries oxygen-poor blood to the
right atrium from the upper parts of the body
• Inferior vena cava – large vein carries oxygen-poor blood
to the right atrium from the lower half of the body
Valves – flaps of tissue that close and open
to insure that blood flows in the proper
direction.
• Tricuspid valve – between RA and RV.
• Pulmonary valve – between right ventricle and
pulmonary artery, when ventricle contracts,
valve opens
• Mitral valve (bicuspid) – located between the left
atrium and left ventricle, prevents back-flow of
blood from ventricle to atrium
• Aortic Valve – valve from LV to Aorta (largest
artery)
Read pgs. 128-131
Answer the following questions.
 Why
is the circulatory system like a
train?
 What is the major function of the
circulatory/cardio vascular system?
 What is another crucial function of
this system?
 What are the 3 major components of
the this system?
Why is the circulatory/cardiovascular
system like a train?
A
train picks up people and products
and transports them to their
destination.
 The blood picks up nutrients and
gases and delivers them to the
appropriate areas where they can be
used by the cells.
What is the major function of the
cardiovascular system?
 Major
function is to transport
nutrients and gases to various areas
of the body to be used by the cells to
do their jobs.
What is another important function of the
cardiovascular system?
 This
system removes waste materials
from the cells and delivers them to
the kidneys, lungs and skin to be
removed from the body.
What are the major components of the
cardiovascular system?
 Blood
 Heart
 Blood
vessels
Pick up a pink 3-2-1 :
3- List the 3 main components of the
cardiovascular system
2- State the 2 important functions/jobs of this
system
1- Why is the cardiovascular system like a train?
What is the pulmonary and systemic
circulatory systems?
• Pulmonary circulation occurs between the
heart and the lungs only. These arteries
and veins pick up & carry O2 back to the
heart while CO2 is being dropped off at
the lungs to be exhaled.
• Systemic circulation takes O2 to the cells
of the body and pick up CO2 (waste
material) from the cells
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Your heart is a muscle about the size of your fist.
Compare it to other muscles. Can you control it like
you do the muscles in your arms or legs? Can you
exercise it like you do other muscles? Why or Why not?
Exercise isn’t the only way to keep the heart healthy.
Brainstorm a list of ways to keep the cardiovascular
system in tip-top shape. What can happen if this
system becomes unhealthy?
Circulatory/Cardiovascular
Artery- blood vessel that carries blood away from the heart.
Vein- blood vessel that carries blood back to the heart.
Capillary- smallest blood vessel found between arteries and veins.
Atrium- one of two upper chambers of the heart.
Blood – 4 parts
ABO- Universal donor
AB- Universal recipient