outer surface --> pericardial mediastinal pleura

Inner surface --> parietal layer of the serous pericardium

vv. pulmonary

(valveless)

ligamentum arteriosum

•  

  • A connective tissue remnant of the fetal ductus arteriousus

  • Arises near the bifurcation (division into a fork) of the pulmonary trunk

  • Passes to the aorta

paraconal interventricular groove

-separates left and right ventricles

subsinuosal interventricular groove

dorsocaudal

interventricular septum

intervenous tubercle

(found in right atrium)

mm. pectinae

(right atrium and right auricle)

Fossa ovalis

(right atrium)

Crista terminalis

limbus fossae ovalis

(caudal side of intervensous tubercle)

Conus arteriosus

•  

  • Funnel shaped part of the right ventricle that lies between the planes going through the two openings of the right ventricle

  • Externally embraced by the right auricle

Pulmonary trunk valve

-has right, left, and intermediate semilunar cusps

Aortic valve

-right, left, and septal semilunar valves