The Cardiovascular System By: Sara Nordstrom

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The Cardiovascular SystemBy Sara Nordstrom

• Focusing on
• THE HEART

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Parts of the Cardiovascular System

• Heart
• Veins
• Arteries
• Capillaries
• Blood

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Picture of Cardiovascular System
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What does this body system do?

• The job of this body system is to supply oxygen
  and nutrients to all parts of the body and
  removes carbon dioxide and waste products.

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Blood

• Blood is essential to our very life. It is the
  fluid that carries all we need to all our body
  cells and then removes the waste products from
  these cells. It contains many different
  components but today we are just learning how it
  travels through the Cardiovascular system.

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The Heart

• The Heart is the central part of the
  Cardiovascular system. Without our heart and the
  work it does for our bodies we would not be
  alive. It is the pump that receives blood from
  all parts of the body to replenish its oxygen
  supply. It also sends oxygen-rich blood back out
  to all parts of the body. There are two
  different parts of the cardiovascular system that
  carry this blood to and from the heart.

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The Veins and the Arteries

• The veins are the blue colored lines on the
  diagram. They bring oxygen-lacking blood back to
  the heart. Click here for more information.
  http//sln.fi.edu//biosci/vessels/veins.html
• The arteries are the red colored lines they take
  oxygen-rich back out to all parts of the body.
  Read more about arteries by clicking this link
  http//sln.fi.edu//biosci/vessels/arteries.html

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Capillaries

• These are smaller then veins and arteries but
  they branch off from these bigger vessels. They
  transport blood to and from the smaller spaces
  where the veins and arteries cannot go because of
  their size. This link will give you further
  information about capillaries http//sln.fi.edu//
  biosci/vessels/capillaries.html

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We know the PartsNow Lets Take a Trip

• First the oxygen-lacking blood enters the heart
  through two main veins the superior vena cava and
  the inferior vena cava. This blood enters the
  right atrium. Then the blood moves from the
  right atrium to the right ventricle. Once the
  blood is into the right atrium it is pumped up
  the pulmonary artery to the lungs.

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Next.

• The blood leaving the heart travels to the lungs
  where it gains much-needed oxygen. This blood
  then returns to the heart through the pulmonary
  veins and enters the left atrium. From the left
  atrium the blood is pushed into the left
  ventricle. When the heart contracts the blood is
  sent up from the left ventricle through a large
  artery called the aorta where it is distributed
  to all parts of the body.

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Take a look at this?

• http//www.medtropolis.com/VBody.asp
• This link will bring you on a narrated and visual
  tour of the heart that I just explained on paper.
  It does a lot better job and you can actually
  see how the blood moves. Once you get here you
  need to pick the language you want the tour to be
  in. Then pick the selection for the Human Heart.
  Finally choose the narrated tour.

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After the blood leaves the Aorta

• Once the blood has left the heart through the
  artery called the Aorta it travels to all parts
  of the body, the fingers, the toes, and the far
  ends of the body. The small blood vessels in
  your body called capillaries allow the blood to
  continue to flow where veins and arteries are no
  longer able to do their job. The whole process is
  continuous. There is always blood flowing to and
  away from your heart.

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What did you learn???

• I hope you learned about the different parts of
  the cardiovascular system and the jobs each part
  does.
• I hope you can understand what is happening when
  your heart beats.
• What job is it doing???