Circulatory System Quiz
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Questions and Answers

What is the main function of the nodal system?

  • Extracting oxygen from blood
  • Surrounding the heart in a protective layer
  • Pumping blood to the lungs
  • Conduction of electrical impulses within the heart (correct)

Which structure serves as the protective sac surrounding the heart?

  • Epicardium
  • Endocardium
  • Pericardium (correct)
  • Myocardium

What is systemic circulation responsible for?

  • Transporting deoxygenated blood to the lungs
  • Pumping blood to all parts of the body (correct)
  • Dissolving blood clots
  • Regulating heart rate

What does systolic pressure measure?

<p>Blood pressure during heart contraction (D)</p> Signup and view all the answers

What effect does a vasoconstrictor have on blood vessels?

<p>It constricts blood vessels, increasing blood pressure (B)</p> Signup and view all the answers

What is the primary function of a vasodilator?

<p>To stimulate dilation of blood vessels (B)</p> Signup and view all the answers

Which of the following correctly describes veins?

<p>They carry oxygen-poor blood to the heart (B)</p> Signup and view all the answers

What do ventricles do in the circulatory system?

<p>Pump blood to the lungs and the body (B)</p> Signup and view all the answers

What structure do the atria represent in the heart?

<p>Upper chambers that receive blood (A)</p> Signup and view all the answers

Which statement best describes the function of veins?

<p>They contain valves to prevent backflow of blood (A), They transport carbon dioxide-rich blood to the heart (C)</p> Signup and view all the answers

What is the primary function of an anticoagulant medication?

<p>To prevent blood clot formation (D)</p> Signup and view all the answers

Which of the following describes the role of diuretics?

<p>They increase urine output (A)</p> Signup and view all the answers

What part of the heart is referred to as the apex?

<p>The lowest part of the heart's exterior (B)</p> Signup and view all the answers

Which blood vessels are responsible for carrying oxygenated blood away from the heart?

<p>Arteries (D)</p> Signup and view all the answers

What layer of the heart is known as the endocardium?

<p>The innermost layer lining the chambers (D)</p> Signup and view all the answers

Flashcards

antianginal

Medication that prevents or relieves angina (chest pain).

anticoagulant

Agent that prevents blood clot formation.

antihypertensive

Medication that lowers high blood pressure.

aorta

Largest artery in the body, carrying blood away from the heart.

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apex

Lowest point of the heart's external surface.

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arteries

Blood vessels carrying oxygenated blood from the heart.

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diuretic

Drug that increases urine production.

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endocardium

Innermost layer of the heart, lining chambers and valves.

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Vasodilator

A substance that widens blood vessels.

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Veins

Blood vessels that carry blood back to the heart.

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Ventricles (heart)

Heart chambers that pump blood out of the heart.

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Atria (heart)

Heart chambers that receive blood.

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Ventricles (brain)

Fluid-filled cavities in the brain.

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Nodal System

The heart's electrical conduction system.

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Pericardium

The sac that surrounds the heart.

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Pulmonary Circulation

Blood flow from heart to lungs and back.

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Systemic Circulation

Blood flow from heart to body and back.

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Systolic Pressure

Blood pressure during heart contraction.

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Thrombolytic

Medication that breaks up blood clots.

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Vasoconstrictor

Agent that narrows blood vessels.

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