Lecture 21: Position & Walls of the Heart
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Questions and Answers

Which of the following vessels carries deoxygenated blood to the right atrium from the upper body and limbs?

  • Coronary sinus
  • Inferior vena cava
  • Pulmonary veins
  • Superior vena cava (correct)

How many pulmonary veins transport oxygenated blood from the lungs to the left atrium?

  • 6
  • 2
  • 3
  • 4 (correct)

Which of the following vessels transports deoxygenated blood from the right ventricle to the lungs?

  • Superior vena cava
  • Aorta
  • Inferior vena cava
  • Pulmonary trunk (correct)

Which of the following vessels transports oxygenated blood from the left ventricle to the body?

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

What is the name of the structure that separates the upper and lower chambers of the heart?

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

Which part of the heart includes the right atrium and both ventricles?

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

What is the portion of the heart that rests on the diaphragm known as?

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

Which part of the heart is described as the largest muscular wall in depth and size?

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

To which anatomical landmark is the fibrous pericardium attached?

<p>Diaphragm (C)</p> Signup and view all the answers

Which part of the heart is mainly the tip of the left ventricle?

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

What is the protective outer sac of tough dense connective tissue that attaches the heart to the diaphragm called?

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

What is the name of the inner serous layer of the pericardium that is attached to the heart surface?

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

What is the purpose of the pericardial cavity?

<p>To lubricate the heart and reduce friction during pumping (D)</p> Signup and view all the answers

Which of the following grooves or depressions can be observed on the surface of the heart?

<p>All of the above (D)</p> Signup and view all the answers

What is the name of the outermost layer of the heart wall?

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

Which layer of the heart wall has special conduction capabilities?

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

Which blood vessels enter and exit the heart?

<p>All of the above (D)</p> Signup and view all the answers

What are Trabeculae Carneae?

<p>Muscular ridges projecting from the inner surface of the ventricle (C)</p> Signup and view all the answers

What is the function of Papillary Muscles?

<p>Prevent backflow and inversion of valves (C)</p> Signup and view all the answers

Which valve is also known as the Right AV valve?

<p>Tricuspid valve (C)</p> Signup and view all the answers

What structures prevent suction in the ventricle due to a flat surface membrane?

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

What do Chordae Tendineae do in relation to the valves?

<p>Attach papillary muscles to cuspid valves (C)</p> Signup and view all the answers

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