Human Anatomy: The Heart and Circulatory System

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Questions and Answers

What is the number of cusps present in the mitral valve?

  • Four
  • Two (correct)
  • One
  • Three

Which valve closes during ventricular diastole?

  • Tricuspid valve
  • Mitral valve
  • Pulmonary valve (correct)
  • Aortic valve (correct)

What is the primary function of the heart?

  • To filter blood impurities
  • To pump blood into the blood vessels (correct)
  • To store white blood cells
  • To produce oxygenated blood

Where is the coronary sinus located?

<p>Ending in the right atrium (A)</p> Signup and view all the answers

Which chamber of the heart receives oxygenated blood from the lungs?

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

What type of blood do all arteries carry, except pulmonary arteries?

<p>Oxygenated blood (A)</p> Signup and view all the answers

What is the primary function of veins?

<p>Transport blood towards the heart (C)</p> Signup and view all the answers

Which of the following statements about the position of the heart is true?

<p>The apex is directed anteriorly and to the left (A)</p> Signup and view all the answers

What type of blood vessels carry oxygenated blood from the heart to the body?

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

Which of the following arteries has a tortuous course?

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

What is unique about end arteries?

<p>Obstruction leads to ischemia (D)</p> Signup and view all the answers

What structure encloses the heart?

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

Which of the following valves is located between the left atrium and left ventricle?

<p>Mitral valve (A)</p> Signup and view all the answers

Which statement about pulmonary veins is correct?

<p>They transport oxygenated blood to the heart (B)</p> Signup and view all the answers

What is the source of blood that enters the right atrium?

<p>Superior and inferior venae cava (A)</p> Signup and view all the answers

How many surfaces does the heart have?

<p>4 (B)</p> Signup and view all the answers

Flashcards

Heart Chambers

The heart contains four chambers: two atria and two ventricles. Each chamber has a specific role in the circulatory system.

Right Atrium

Receives deoxygenated blood from the body.

Left Ventricle

Pumps oxygenated blood to the body.

Blood Vessels

Structures that carry blood throughout the body.

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Right Ventricle

Pumps deoxygenated blood to the lungs

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Left Atrium

Receives oxygenated blood from the lungs

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Heart Valves

Prevent backflow of blood and ensure one-way blood flow within the heart.

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Heart Position

The heart is positioned obliquely in the middle of the chest cavity, with its base facing posteriorly and apex anteriorly and to the left.

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Mitral valve location

Located between the left atrium and left ventricle.

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Tricuspid valve location

Located between the right atrium and right ventricle.

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Aortic valve location

Located between the left ventricle and the aorta.

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Pulmonary valve location

Located between the right ventricle and pulmonary trunk.

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Coronary sinus ending

The coronary sinus drains into the right atrium.

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Artery definition

Carries blood away from the heart.

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Vein definition

Carries blood towards the heart.

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Tortuous artery example

Facial, lingual, splenic and uterine arteries.

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