Structure of the Heart & Circulation Review Answer Key

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Name: ______________________________ Date: _________ Period:
___
The Heart and Circulation Review
1. Label the all the arrows in the diagram below, indicate how blood flows into and out of the
heart. Use red to indicate the flow of oxygenated blood, and blue to indicate the flow of
deoxygenated blood.
Aorta
Vena Cava
Pulmonary artery
Pulmonary artery
Pulmonary artery
Pulmonary vein
Pulmonary vein
Left atrium
Pulmonary valve
Aortic valve
Right atrium
Bicuspid (mitrial) valve
Tricuspid valve
Right Ventricle
Left Ventricle
Vena Cava
Septum
2. What are the roles of arteries, veins, and capillaries?
Arteries carry oxygenated blood away from the heart (exception pulmonary artery)
Veins carry deoxygenated blood to the heart (exception pulmonary vein)
Capillaries are tiny vessels that allow oxygen and carbon dioxide to be exchanged between
the rbc's and tissues, and link arteries and veins together
3. Why do we say the heart is a two pump system? What are the "pumps"?
Half of the heart pumps blood to the lungs (pulmonary system), and the other half
pumps blood to the body (systemic system). The two pumps are the ventricles. They are responsible for the actual pumping of
blood, while the atrium act as a reservoir holding blood till the ventricle is ready.
Name: ______________________________ Date: _________ Period:
___
4. What is the difference between systemic and pulmonary circulation?
The systemic system pumps blood to the body, while the pulmonary system pumps blood To
the lungs.
5. In the diagram below, color the oxygenated blood RED, and the deoxygenated blood BLUE.
Be sure to label the three types of blood vessels: artery, vein, and capillary. Also, label the four
chambers of the heart!
Oxygenated blood
(arteries)
Deoxygenated blood
(arteries)
Capillaries are in
between the arteries
and veins
Name: ______________________________ Date: _________ Period:
___
Structure
Pulmonary or
Systemic
Circulation?
Function
Inferior Vena Cava
Pathway for blood from the lower part of the body top the
heart, right atrium.
Superior Vena Cava
Pathway for blood from the upper part of the body top the
heart, right atrium.
Right Atrium
Collects and holds deoxygenated blood from the body for the
right ventricle to pump to the lungs
Tricuspid Valve
Prevents deoxygenated blood from entering the right ventricle
until ready.
Right Ventricle
Pumps deoxygenated blood to the lungs
Pulmonary Valve
Prevents deoxygenated blood from falling back into the
ventricle when it's pumped to the lungs.
Pulmonary Arteries
Carries deoxygenated blood to the lungs.
Only artery that carries deoxygenated blood.
Pulmonary Veins
Carries oxygenated blood to the heart. Only vein that carry oxygenated blood.
Left Atrium
Collects and holds oxygenated blood from the lungs for the left
ventricle to pump to the lungs
Mitral Valve
Prevents oxygenated blood from entering the left ventricle until
ready.
Left Ventricle
Pumps oxygenated blood to the rest of the body
Aortic Valve
Prevents oxygenated blood from falling back into the ventricle
when it's pumped to the body.
Name: ______________________________ Date: _________ Period:
___
Aorta
Carries oxygenated blood out to the body from the heart.
Septum
Separates the right and left ventricle.
Myocardium
Technical name for cardiac muscle.
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