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Questions and Answers
What is the primary function of the pulmonary arteries?
What is the primary function of the pulmonary arteries?
The pulmonary veins are responsible for carrying deoxygenated blood to the left atrium.
The pulmonary veins are responsible for carrying deoxygenated blood to the left atrium.
False (B)
What part of the heart is involved in the systemic circuit?
What part of the heart is involved in the systemic circuit?
Left atrium and left ventricle
The ___________ circuit deals with the flow of deoxygenated blood to the lungs.
The ___________ circuit deals with the flow of deoxygenated blood to the lungs.
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Match the following components to their respective circuits:
Match the following components to their respective circuits:
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Which statement best describes the systemic circuit?
Which statement best describes the systemic circuit?
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The right half of the heart is responsible for the systemic circuit.
The right half of the heart is responsible for the systemic circuit.
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Identify the vessels that carry oxygenated blood from the lungs to the heart.
Identify the vessels that carry oxygenated blood from the lungs to the heart.
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What is the correct order of blood flow through the heart and vessels?
What is the correct order of blood flow through the heart and vessels?
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Blood velocity is highest in the capillaries.
Blood velocity is highest in the capillaries.
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What is the effect of vasodilation on blood pressure?
What is the effect of vasodilation on blood pressure?
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The total cross-sectional area is largest in the ______.
The total cross-sectional area is largest in the ______.
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Which statement best describes blood pressure in the circulatory system?
Which statement best describes blood pressure in the circulatory system?
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Veins contain muscles for vasoconstriction and vasodilation.
Veins contain muscles for vasoconstriction and vasodilation.
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Match the following blood vessel types with their characteristics:
Match the following blood vessel types with their characteristics:
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As the total cross-sectional area increases, the velocity of blood ______.
As the total cross-sectional area increases, the velocity of blood ______.
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Describe the relationship between vessel diameter and blood pressure.
Describe the relationship between vessel diameter and blood pressure.
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Flashcards
Pulmonary Circuit
Pulmonary Circuit
The part of the circulatory system that moves blood between the heart and lungs.
Systemic Circuit
Systemic Circuit
The circulatory system's part that carries oxygenated blood to the body's tissues and returns deoxygenated blood to the heart.
Pulmonary Arteries
Pulmonary Arteries
Arteries that carry deoxygenated blood from the heart to the lungs.
Pulmonary Veins
Pulmonary Veins
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Oxygenated blood
Oxygenated blood
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Deoxygenated blood
Deoxygenated blood
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Right side of the heart
Right side of the heart
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Left side of the heart
Left side of the heart
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Blood flow pathway
Blood flow pathway
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Vessel Diameter
Vessel Diameter
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Blood Velocity
Blood Velocity
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Blood Pressure
Blood Pressure
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Cross-Sectional Area
Cross-Sectional Area
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Vasoconstriction
Vasoconstriction
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Vasodilation
Vasodilation
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Capillary Function
Capillary Function
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Study Notes
The Circulatory System: Pulmonary and Systemic Circuits
- The circulatory system is composed of two interconnected circuits: the pulmonary and systemic circuits
- These work together to deliver oxygen and remove waste from the body
- The pulmonary circuit carries deoxygenated blood to the lungs and returns oxygenated blood to the heart
- The pulmonary arteries carry deoxygenated blood to the lungs
- The pulmonary veins carry oxygenated blood from the lungs to the heart
- The systemic circuit carries oxygenated blood from the heart to the body and returns deoxygenated blood to the heart
- The arteries carry blood away from the heart
- The veins carry blood to the heart
- The pulmonary trunk and right ventricle are associated with the pulmonary circuit
- Pulmonary arteries are the only arteries carrying deoxygenated blood
- Pulmonary veins are the only veins carrying oxygenated blood
Blood Vessel Characteristics
- Vessel Diameter: The size of the space inside a blood vessel. Arteries have large diameters, veins have similarly large diameters, while capillaries have very small diameters
- Blood Velocity: Refers to the speed at which blood travels. Velocity is greatest in arteries, slows significantly in capillaries, and is slower in veins. This difference is due to varying cross sectional areas of blood vessels.
- Blood Pressure: Highest in arteries, lowest in capillaries. It decreases as blood travels further from the heart.
- Total Cross-Sectional Area: The sum of the areas of all blood vessels of a specific type. Capillaries have the highest cross-sectional area. As the cross-sectional area increases, the vessel diameter and blood velocity decrease.
Key Characteristics of the Systemic Circuit
- Begins at the left atrium and ventricle, picking up oxygenated blood from the lungs
- The blood is pumped to the aorta where it branches into smaller arteries that supply the body tissues
- Once the blood reaches the tissues, it picks up waste products and loses oxygen, becoming deoxygenated
- deoxygenated blood then travels back to the heart through veins and eventually to the right atrium
Questions About Blood Vessels
- Highest Blood Pressure: Arteries
- Lowest Blood Pressure: Capillaries
- Highest Velocity: Arteries
- Lowest Velocity: Capillaries
- Highest Cross-Sectional Area: Capillaries
- Lowest Cross-Sectional Area: Arteries
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Description
Explore the key components of the circulatory system, focusing on the pulmonary and systemic circuits. Understand how these circuits function to deliver oxygen and remove waste from the body, along with the unique characteristics of blood vessels involved.
