Heart
Plate221
Atria,Ventricles,andInterventricularSeptum
Mitral valve
Posterior cusp
Anterior cusp
Right superior pulmonary vein
Ascending aorta
Left semilunar cusp
Posterior
semilunar (non-
coronary) cusp
Aortic
valve
Superior
vena cava
Atrio-
ventric-
ular
part
Inter-
ventric-
ular
part
Right atrium
Anterior
cusp
(
retracted
)
Septal
cusp
Posterior cusp
Right ventricle
Right anterior
papillary muscle (
cut
)
Right posterior papillary muscle
Muscular part of interventricular septum
Left
ventricle
Left posterior
papillary muscle
Left anterior
papillary muscle
Left ventricle
Pulmonary trunk
Anterior cusp of
mitral valve
Left atrium
Left auricle
(atrial appendage)
Left
pulmonary
veins
Openings of coronary arteries
Ascending aorta
Right auricle (atrial appendage)
Left semi-
lunar cusp
Right semi-
lunar cusp
Aortic
valve
Supraven-
tricular
crest
Outflow
to
pul-
monary
trunk
Right
anterior
papillary
muscle (
cut
)
Right
ventricle
Septal (medial) papillary muscle
Membranous septum
Tricuspid valve
Plane of section
Septomarginal trabecula
(moderator band)
