External/Internal Heart Anatomy

Question 1

Left Border

Answer 1

Obtuse Margin (Obtuse artery)

Question 2

Inferior Border

Answer 2

Acute Margin (acute marginal artery)

Question 3

Sulci

Answer 3

Grooves on the surface of the heart; mark the junction of chambers of the heart Sulci: Atrioventricular Sulcus; Anterior Interventricular Sulcus; Posterior Interventricular Sulcus

Question 4

Sinus of Valsalva

Answer 4

any one of the pouches of the aorta and pulmonary artery which are located behind the flaps of the semilunar valves and into which the blood in its regurgitation toward the heart enters and thereby closes the valves—called also aortic sinus