It is a closed sac having two layers: the visceral layer (epicardium), immediately surrounding the heart, and the outer parietal layer, forming the sac, composed of strong fibrous tissue, the fibrous pericardium, lined with a serous membrane, the serous pericardium. Synonym(s): heart sac, theca cordis.
The right and left cavernous sinuses are interconnected by the anterior and posterior intercavernous sinuses. Tributaries of the cavernous sinus include the superior ophthalmic, superficial middle cerebral, and inferior cerebral veins and the sphenoparietal sinus.
Heart Diagram: Right/left Atria, Right/left Ventricles, Pulmonary Trunk, Aortaâ¦ The septum is the dividing wall between the right and left sides of the heart. Good heart X-section Study 95 NURSE 2514 Study Guide Dossman,holland) flashcards from StudyBlue on StudyBlue.