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Chambers of the Heart Atria Quiz

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Questions and Answers

Which chambers of the heart are referred to as the 'Receiving Chambers'?

Pericardium

Ventricles

Myocardium

Atria (correct)

What is the function of the semilunar valves in the heart?

Regulate blood flow between the atria

Receive blood from the lungs

Prevent backflow of blood from arteries into ventricles (correct)

Contract and dilate to pump blood

Which chamber forms the right border of the heart?

Right Ventricle

Left Ventricle

Right Atrium (correct)

Left Atrium

Where are pectinate muscles mainly confined in the heart?

Auricle of the left atrium (C) Signup and view all the answers

Which structure separates the two ventricles of the heart?

Interventricular Septum (C) Signup and view all the answers

What causes the roughness of the anterior and posterior walls of the atria?

Presence of pectinate muscle (A) Signup and view all the answers

Where is the sinoatrial (SA) node located?

Right Atrium; Medial to opening of superior vena cava (SVC) (D) Signup and view all the answers

What is the function of the atrioventricular (AV) node?

Ensures ventricles receive signal to contract after atria have contracted (D) Signup and view all the answers

What is the role of the AV bundle in the heart's conduction system?

Connects the atria to the ventricles (B) Signup and view all the answers

Where do the R and L Bundle Branches extend to?

Apices of right and left ventricles (B) Signup and view all the answers

Which heart component surrounds the 2 ventricles and acts as the largest pacemaker of the heart?

Purkinje Fibers (C) Signup and view all the answers

What is the main function of the Purkinje fibers in the heart?

Conducting action potentials to ventricular muscle cells (A) Signup and view all the answers

What is the purpose of the atrioventricular valves in the heart?

Prevent backflow of blood into the atria during ventricular contraction (D) Signup and view all the answers

Which part of the heart contains trabeculae carnae connected to papillary muscles by chordae tendineae?

Left ventricle (D) Signup and view all the answers

Where does blood pass from the left ventricle after leaving through a valve?

Ascending aorta (A) Signup and view all the answers