Anatomy of the Heart

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What is the main function of the fibrous pericardium?

To lubricate the heart

To directly pump blood through the heart

To anchor the heart and maintain its position (correct)

To prevent over-filling of the heart

Which of the following valves is not a semilunar valve?

Aortic valve

Left atrioventricular valve (correct)

Pulmonary valve

Right atrioventricular valve

What is the location of the apex of the heart?

At the base of the heart, near the great vessels

In the 2nd intercostal space on the right side of the sternum

In the 3rd intercostal space on the left side of the sternum

In the 5th intercostal space in the mid-clavicular line (correct)

What is the name of the depression in the right atrium that is open during fetal development?

Fossa Ovalis Signup and view all the answers

Which of the following structures is responsible for contributing to atrial contraction?

Pectinate muscles Signup and view all the answers

What is the name of the ligament that forms from the closure of the ductus arteriosus in the adult?

Ligamentum arteriosum Signup and view all the answers

What is the function of the chordae tendineae?

To anchor the valves to the walls of the ventricles Signup and view all the answers

Which of the following coronary arteries supplies the sinoatrial (SA) node?

Nodal branch Signup and view all the answers

What is the term for the sound produced by the closing of the heart valves?

Lub-dub Signup and view all the answers

What is the orientation of the heart in the thoracic cavity?

Tipped pyramid Signup and view all the answers

What is the primary function of the fibrous skeleton in the heart?

To prevent over-dilation of valve openings Signup and view all the answers

Which branch of the vagus nerve is responsible for regulating heart rate?

Left recurrent laryngeal Signup and view all the answers

What is the function of the SA node in the heart?

To act as a natural pacemaker Signup and view all the answers

What is the name of the large vessel that runs posterior and diaphragmatic surfaces between the atria and ventricles?

Coronary sinus Signup and view all the answers

Which of the following is NOT a function of the sympathetic nervous system on the heart?

Decrease blood pressure Signup and view all the answers

What is the name of the branch that arises from the arch of the aorta?

Brachiocephalic trunk Signup and view all the answers

What is the name of the vein that drains the posterior intercostal veins and joins the superior vena cava?

Azygous vein Signup and view all the answers

What is the name of the artery that gives rise to the posterior interventricular branch?

Right coronary artery Signup and view all the answers

What is the name of the nerve that runs in front of the root of the lung in close relationship with the fibrous pericardium?

Phrenic nerve Signup and view all the answers

What is the name of the system that encompasses the heart, capillaries, arteries, and veins?

Cardiovascular system Signup and view all the answers