Which chamber receives oxygenated blood from the lungs?

• Right atrium

• Right ventricle

• Left atrium

• Left ventricle

• Coronary sinus

Which heart valve prevents backflow from the left ventricle into the left atrium?

• Mitral

• Pulmonary

• Triscuspid

• Aortic

The apex of the heart is primarily formed by what structure?

• Left atrium

• Right ventricle

• Right auricle

• Inferior vena cava

• Left ventricle

Which of the following structures are described as "muscular ridges found on the inner walls of the right atrium"

• Crista Terminalis

• Papillary muscles

• Musculi pectinati

• Septomarginal trabecular

• Chordae terminali

Which coronary artery typically supplies the SA node?

• RCA

• LCA

• Posterior intraventricular artery

• Anterior intraventricular artery

• Left circumflex artery

Where is the superficial cardiac plexus found?

• Inferior to the aortic arch, superior to the pulmonary trunk

• Superior to aortic arch

• Between the aortic arch and tracheal bifurcation

• At the apex of the heart

• At the superior thoracic aperture

Label the structures of the right atrium

a

b

c

d

Tricuspid Valve

Crista Terminalis

Fossa Ovalis

Musculi Pectinati

Label the following structures of the heart

a

b

c

d

e

Pulmonary valve

Papillary muscles

Tricuspid valve

Mitral valve

Chordae tendinae

Where is the aortic valve auscultated?

• 2nd intercostal space, right sternal border

• 2nd intercostal space, left sternal border

• 5th intercostal space, mid-clavicular line

• 4th intercostal space

The fossa ovalis is a remnant of which fetal structure?

• Foramen ovale

• Ductus arteriosum

• Umbilical vein

• Ligamentum teres

• Ductus venosum