Conceptually similarSPLHeart pericardium surface, SEMSS2784647TA0648Rights ManagedSPLHeart muscle fibers , SEMSS2784632TA0631Rights ManagedSPLHeart muscle fibers , SEMSS2784635TA0634Rights ManagedSPLHeart pericardium surface, SEMSS2784646TA0645Rights ManagedSPLHeart pericardium surface, SEMSS2784648TA0647Rights ManagedSPLHeart pericardium surface, SEMSS2784649TA0646Rights ManagedSPLHeart muscle fibers , SEMSS2784633TA0632Rights ManagedSPLHeart muscle fibers , SEMSS2784634TA0633Rights ManagedSCIENCE PHOTO LIBRARYHeart muscle fibres , SEMSS21260326Rights ManagedView AllView more with similar tones Heart pericardium surface, SEMLicense type:Rights ManagedUnique identifier:SS21260328Description:Surface of the heart pericardium, scanning electron micrograph (SEM). The pericardium is a double-walled, membranous sac surrounding the heart. The pericardium has a tough outer fibrous layer (fibrous pericardium) and a delicate serous layer (serous pericardium). Shown here is the outer surface of the fibrous pericardium that is composed of connective tissue (fibronectin, collagen and laminin). Flattened squamous epithelial cells (from the upper serous layer) can be seen protruding through the fibrous pericardial layer. The inner serous pericardial layer is the wall adjacent to the heart (not seen). It is split into two layers, the epicardium (just above the heart) and the parietal layer. Between the two layers is the pericardial cavity, which contains serous fluid. The serous pericardium lubricates the heart, preventing friction. Magnification: x5,000 when shortest axis printed at 25 millimetres.Credit:DENNIS KUNKEL MICROSCOPY / Science SourceSize:2646px × 3302px (~24 MB)Restrictions:No Sale through SubagentsGet PricingHow Will The Visual Be Used?ShareKeywords:black and white-C036/9855-C0369855-cardiac-circulatory system-collagen-connective tissue-connective tissues-epicardium-epithelia-epithelial cell-epithelial cells-epithelium-epithelium cell-epithelium cells-false-colored-fibronectin-fibrous layer-fibrous pericardium-flattened squamous epithelia-flattened squamous epithelial-flattened squamous epithelial cell-flattened squamous epithelial cells-flattened squamous epithelium-heart inflammation-laminin-mammal heart-medical-medicine-membranous sac-monochrome-nobody-no-one-parietal layer-pericardial cavity-pericardial layer-pericardial sac-pericardial surface-pericarditis-pericardium-pericardium inflammation-pericardium surface-sem-serous fluid-serous layer-serous pericardium-squamous epithelial cell-squamous epithelial cells-squamous epithelium cell-squamous epithelium cellsModel release:N/AParent folder:RM Medical Group 6