Circulatory Vessels/Heart
Presentation
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Biology, Science
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10th - 12th Grade
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Practice Problem
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Medium
Andrea Laudi
Used 30+ times
FREE Resource
13 Slides • 6 Questions
1
The Circulatory System
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Structure of the Heart: Background Info
4 chambers : A chamber is space that collects blood
In medicine, left/right directions are based on the PATIENT'S perspective, not the observer
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The 4 Chambers
1. Right Atrium
2. Right Ventricle
3. Left Atrium
4. Left Ventricle
-Atria are Above ventricles
-Ventricles are Voluminous- ventricles are made of thick muscle that contracts to pump blood
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Step 1: Blood enters the heart
Blood from the body enters the heart's Right Atrium chamber
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Multiple Select
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How does blood "carry" gases like O2 & CO2?
Red blood cells (RBCs) contain the protein hemoglobin
oxygen (O2) and carbon dioxide (CO2) can bind to hemoglobin, and thus are carried in the blood
When red blood cells are carrying a lot of O2 = oxygenated blood
When red blood cells are carrying low amounts of O2 = deoxygenated blood
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Okay, back to step 1:
Blood from the body enters the heart's Right Atrium chamber
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Multiple Choice
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Great! So deoxygenated blood enters the Right Atrium (RA). Now it will flow into chamber 2: the Right Ventricle (RV)
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Next, the right ventricle pumps (remember ventricle=voluminous muscle) the blood out through the pulmonary artery
Pulm = lung
Artery = Away from heart
At the lungs, blood picks up oxygen
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Multiple Choice
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Oxygenated! Our hemoglobin is now full of O2.
From the lungs, blood returns to the heart through the pulmonary veins.
Pulm = lung
Veins = blood returns to heart
Blood enters chamber 3: Left Atrium
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Multiple Choice
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Left Atrium will empty into the Left Ventricle!
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After the left ventricle, the blood is pumped into the aorta, which brings blood to the body.
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Multiple Choice
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Multiple Choice
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The Circulatory System
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