XÈNIA CASTILLO Nº 4XÈNIA CASTILLO Nº 4EVA NOVOA Nº 14EVA NOVOA Nº 14

The ventral surface looking at its prominent The ventral surface looking at its prominent groove, the interventricular sulcus, that runs groove, the interventricular sulcus, that runs diagonally across it form upper left to lower right diagonally across it form upper left to lower right side.side.

VENTRAL SURFACE DORSAL SURFACEVENTRAL SURFACE DORSAL SURFACE

In the center of the heart there is the pulmonary In the center of the heart there is the pulmonary artery which takes blood from the right ventricle.artery which takes blood from the right ventricle.

Insert your dissecting scissors into the Insert your dissecting scissors into the PULMONARY ARTERY PULMONARY ARTERY

Look inside it for three small Look inside it for three small membranous pockets: The membranous pockets: The pulmonary pulmonary valves .valves .

Go down to Go down to the tricuspid valve the tricuspid valve between the right atrium and the right between the right atrium and the right ventricle.ventricle.

The membranes are connected to flaps of The membranes are connected to flaps of muscle called the papillary muscles by tendons muscle called the papillary muscles by tendons called the chordae tendinae or “heartstrings”called the chordae tendinae or “heartstrings”

MEMBRANES