20 Questions
What is the main function of the fibrous pericardium?
To anchor the heart and maintain its position
Which of the following valves is not a semilunar valve?
Left atrioventricular valve
What is the location of the apex of the heart?
In the 5th intercostal space in the mid-clavicular line
What is the name of the depression in the right atrium that is open during fetal development?
Fossa Ovalis
Which of the following structures is responsible for contributing to atrial contraction?
Pectinate muscles
What is the name of the ligament that forms from the closure of the ductus arteriosus in the adult?
Ligamentum arteriosum
What is the function of the chordae tendineae?
To anchor the valves to the walls of the ventricles
Which of the following coronary arteries supplies the sinoatrial (SA) node?
Nodal branch
What is the term for the sound produced by the closing of the heart valves?
Lub-dub
What is the orientation of the heart in the thoracic cavity?
Tipped pyramid
What is the primary function of the fibrous skeleton in the heart?
To prevent over-dilation of valve openings
Which branch of the vagus nerve is responsible for regulating heart rate?
Left recurrent laryngeal
What is the function of the SA node in the heart?
To act as a natural pacemaker
What is the name of the large vessel that runs posterior and diaphragmatic surfaces between the atria and ventricles?
Coronary sinus
Which of the following is NOT a function of the sympathetic nervous system on the heart?
Decrease blood pressure
What is the name of the branch that arises from the arch of the aorta?
Brachiocephalic trunk
What is the name of the vein that drains the posterior intercostal veins and joins the superior vena cava?
Azygous vein
What is the name of the artery that gives rise to the posterior interventricular branch?
Right coronary artery
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
What is the name of the system that encompasses the heart, capillaries, arteries, and veins?
Cardiovascular system
This quiz covers the structure and orientation of the heart, including its location within the thoracic cavity, surface features, and chambers. It's essential knowledge for medical students and healthcare professionals.
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