Cardiovascular System Overview

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Questions and Answers

What is the primary function of the pulmonary vein?

  • Transports oxygen-rich blood from the lungs to the heart (correct)
  • Regulates blood flow into the aorta
  • Carries deoxygenated blood to the body
  • Helps pump blood to the lungs from the heart

Which layer of the heart muscle is responsible for the heart's pumping action?

  • Myocardium (correct)
  • Pericardium
  • Endocardium
  • Epicardium

What role do the tricuspid valve and pulmonary valve serve in the heart?

  • They control blood entry into the systemic circulation.
  • They both regulate blood flow from the left atrium.
  • They help maintain one-way blood flow through the heart. (correct)
  • They are involved in oxygen exchange with the lungs.

What is the primary function of the liver's kupffer cells?

<p>To filter pathogens from the bloodstream (B)</p> Signup and view all the answers

Which of the following statements accurately describes systemic circulation?

<p>It circulates oxygenated blood through the arteries to body tissues. (C)</p> Signup and view all the answers

What is the primary function of bile produced by the liver?

<p>Aid in the digestion and absorption of fats (D)</p> Signup and view all the answers

What is the significance of having one-way valves in veins?

<p>To prevent blood from pooling and ensure return to the heart (C)</p> Signup and view all the answers

Which structure is primarily responsible for pumping oxygenated blood to the body's tissues?

<p>Aorta (B)</p> Signup and view all the answers

Which part of the heart receives deoxygenated blood from the body?

<p>Right atrium (B)</p> Signup and view all the answers

What role does the inferior vena cava play in the cardiovascular system?

<p>Carries deoxygenated blood from the lower body to the heart (C)</p> Signup and view all the answers

Flashcards

Aorta function

Transports oxygen-rich blood from the heart to the body.

Vena Cava function

Returns deoxygenated blood from the body to the heart.

Pulmonary Artery function

Carries blood from the heart to the lungs.

Systolic Pressure

Peak blood pressure during heart contraction.

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Diastolic Pressure

Blood pressure during heart relaxation.

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Liver function (general)

Filters toxins, produces bile, and regulates nutrients.

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Hepatocyte function

Functional cells of the liver performing metabolic tasks.

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Bile function

Helps digest and absorb fats.

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Systemic Circulation

Blood flow to the body, starting from the left ventricle.

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Artery function

Carry blood away from the heart.

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Study Notes

Cardiovascular System

  • Aorta: Transports oxygen-rich blood from the heart to the body.
  • Superior Vena Cava: Carries deoxygenated blood from the upper body to the heart's right atrium.
  • Inferior Vena Cava: Carries deoxygenated blood from the lower body to the heart.
  • Pulmonary Artery: Carries blood from the heart to the lungs.
  • Pulmonary Vein: Carries oxygen-rich blood from the lungs to the heart.
  • Right Atrium: Receives oxygen-poor blood from the body.
  • Left Atrium: Receives oxygen-rich blood from the lungs.
  • Right Ventricle: Pumps oxygen-poor blood to the lungs.
  • Left Ventricle: Pumps oxygen-rich blood to the body.
  • Aortic Valve: Controls blood flow into the aorta, maintaining one-way flow.
  • Pulmonary Valve: Helps oxygen-poor blood reach the lungs.
  • Tricuspid Valve: Controls blood flow from the heart's upper chamber (right atrium) to the lower chamber (right ventricle).
  • Layers of the heart:
    • Epicardium: Outermost layer.
    • Myocardium: Middle layer.
    • Endocardium: Innermost layer.
  • Function of the heart:
    • Produce bile: Important for digestion.
    • Filter out toxic substances: Crucial for detoxification.
    • Regulate blood levels: Maintaining homeostasis.
    • Remove bacteria: Important for immunity.
    • Make immune factors: Supporting the immune system.
    • Clear bilirubin: Removing harmful byproducts.
    • Regulate blood clotting: Important blood functions.

Hepatobiliary System

  • Gallbladder: Pear-shaped organ located under the liver.
  • Function of gallbladder:
    • Stores and concentrates bile produced by the liver.
    • Part of the biliary tree.
  • Bile:
    • Produced in the liver.
    • Stored in the gallbladder.
    • Aids in digestion, particularly fat absorption.
    • Excreted.
  • Liver cells (Hepatocytes): Functional cells of the liver.
  • Kupffer cells: Resident macrophages in the liver.

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