Cardiac Anatomy and Function

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Questions and Answers

The 'lub' sound heard during a heartbeat is caused by which of the following?

The opening of the semilunar valves.
The closing of the atrioventricular valves (tricuspid and mitral). (correct)
The closing of the semilunar valves (aortic and pulmonary).
The contraction of the atria.

The apex of the heart is formed by the tip of the right ventricle.

False (B)

What is the remnant of the fetal foramen ovale in the atrial septum called?

fossa ovalis

The sinoatrial (SA) node, located in the right atrium, is known as the _________ of the heart.

pacemaker Signup and view all the answers

Match the heart valve with the number of cusps it possesses:

Tricuspid valve = Three cusps Mitral valve = Two leaflets Pulmonary valve = Three cusps with curved bags Aortic valve = Three cusps with curved bags Signup and view all the answers

Which layer of the heart wall is also known as the visceral pericardium?

Epicardium (A) Signup and view all the answers

The pulmonary veins carry deoxygenated blood from the lungs to the left atrium.

False (B) Signup and view all the answers

What is the function of the chordae tendineae and papillary muscles in relation to the atrioventricular valves?

prevent valve inversion Signup and view all the answers

The fibrous skeleton of the heart electrically insulates the _ from the _.

atria, ventricles Signup and view all the answers

A patient presents with shortness of breath and rapid pulse. A blockage in which of the following vessels is most likely the cause?

Pulmonary artery (C) Signup and view all the answers

Flashcards

Inferior Vena Cava (IVC)

Drains blood from lower body to right atrium

Superior Vena Cava

Drains blood from head, neck, upper limbs to right atrium