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  2. Interstitium - Wikipedia

    en.wikipedia.org/wiki/Interstitium

    The interstitium is a contiguous fluid-filled space existing between a structural barrier, such as a cell membrane or the skin, and internal structures, such as organs, including muscles and the circulatory system. [1] [2] The fluid in this space is called interstitial fluid, comprises water and solutes, and drains into the lymph system. [2]

  3. Pericardium - Wikipedia

    en.wikipedia.org/wiki/Pericardium

    The pericardium (pl.: pericardia), also called pericardial sac, is a double-walled sac containing the heart and the roots of the great vessels. [1] It has two layers, an outer layer made of strong inelastic connective tissue (fibrous pericardium), and an inner layer made of serous membrane (serous pericardium).

  4. Pericardial effusion - Wikipedia

    en.wikipedia.org/wiki/Pericardial_effusion

    The pericardium is a two-part membrane surrounding the heart: the outer fibrous connective membrane and an inner two-layered serous membrane. The two layers of the serous membrane enclose the pericardial cavity (the potential space) between them. [1] This pericardial space contains a small amount of pericardial fluid, normally 15-50 mL in ...

  5. Fluid compartments - Wikipedia

    en.wikipedia.org/wiki/Fluid_compartments

    The intracellular compartment is the space within the organism's cells; it is separated from the extracellular compartment by cell membranes. [1] About two-thirds of the total body water of humans is held in the cells, mostly in the cytosol, and the remainder is found in the extracellular

  6. Heart - Wikipedia

    en.wikipedia.org/wiki/Heart

    The valves between the atria and ventricles are called the atrioventricular valves. Between the right atrium and the right ventricle is the tricuspid valve. The tricuspid valve has three cusps, [22] which connect to chordae tendinae and three papillary muscles named the anterior, posterior, and septal muscles, after their relative positions. [22]

  7. Pericardial fluid - Wikipedia

    en.wikipedia.org/wiki/Pericardial_fluid

    In patients with ischemic heart disease there is an accumulation of angiogenic growth factors in the pericardial fluid. These contribute to angiogenesis (the formation of new blood vessels) and arteriogenesis (the increase in diameter of existing arterioles). This helps to prevent myocardial ischemia (lack of oxygen to the heart). [6]

  8. Serous membrane - Wikipedia

    en.wikipedia.org/wiki/Serous_membrane

    For the heart, the layers of the serous membrane are called parietal and visceral pericardium. For the lungs they are called parietal and visceral pleura. The visceral serosa of the uterus is called the perimetrium. The potential space between two opposing serosal surfaces is mostly empty except for the small amount of serous fluid. [3]

  9. Purkinje fibers - Wikipedia

    en.wikipedia.org/wiki/Purkinje_fibers

    The Purkinje fibers, named for Jan Evangelista Purkyně, (English: / p ɜːr ˈ k ɪ n dʒ i / pur-KIN-jee; [1] Czech: [ˈpurkɪɲɛ] ⓘ; Purkinje tissue or subendocardial branches) are located in the inner ventricular walls of the heart, [2] just beneath the endocardium in a space called the subendocardium.