october 18, 2013 - lkueh · lesson 8 the circulatory system.notebook 15 october 18, 2013 blood...
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Lesson 8 The Circulatory System.notebook
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October 18, 2013
The Circulatory System
Parts and Functions
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Main Functions
• Carries oxygen from lungs to cells• Carries carbon dioxide from cells to lungs• Carries nutrients from intestines to cells• Carries cellular wastes from cells to kidneys
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The 3 main parts of thecirculatory system
• The Blood Vessels
• The Heart
• Blood
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Types of Blood VesselsArteries
Carry blood away from the Heart
Veins Carry blood into the Heart
Capillaries Connect arteries to veins
Gas exchange, drops off O2, picks up CO2
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Parts of The Heart
The Atria (or Atriums) Receiving Chambers
The Ventricles Pumping Chambers
The Valves Prevents backflow
The Septum Divides the Heart
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Septum
Left Ventricle
Left Atrium
Right Ventricle
Right Atrium
Aorta (Large Artery)
Vena Cavae
(Large Veins)
Pulmonary Artery
Pulmonary Veins
ANATOMY OF THE HEART
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PATHWAY OF BLOOD
We're going to make a list of the structures that a red blood cell would pass through when moving in and out of your heart.
Start at the lungs and end at the lungs
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PATHWAY OF BLOODLungs picks up oxygenPulmonary Vein into the heartThrough the Left Atrium and
Ventricle pumped to body
Aorta major artery out of heartArteries path through bodyCapillaries destination of oxygen, carbon dioxide is picked up
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PATHWAY OF BLOOD
Veins take deoxygenated blood back to the heart
Vena Cava's "blue" blood enters the heart
Through the Right Atrium and Ventricle pumped to lungs
Pulmonary Artery "blue" blood heads to lungs
Lungs Drops off carbon dioxide
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HEART SOUNDS
http://www.youtube.com/watch?v=H04d3rJCLCE
When you hear your heart beating, what are you actually listening to?
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Blood
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The Composition of Blood
The Plasma (Fluid) makes up 55% of the blood volume.
The Solids (Cells) make up 45% of the blood volume.
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Blood Plasma
97% Water3% Other Antibodies and Proteins Nutrients and Wastes
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Blood Solids
Red Blood Cells Carry oxygen Contain Hemoglobin
White Blood Cells Attack bacteria & other invaders
Platelets Control the blood clotting process