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The liver parenchyma is the functional tissue of the organ made up of around 80% of the liver volume as hepatocytes. The other main type of liver cells are non-parenchymal. Non-parenchymal cells constitute 40% of the total number of liver cells but only 6.5% of its volume. [11]
Each cell contains a dense cytoplasm and a prominent cell nucleus. The dense protoplasm of meristematic cells contains very few vacuoles. Normally the meristematic cells are oval, polygonal, or rectangular in shape. Meristematic tissue cells have a large nucleus with small or no vacuoles because they have no need to store anything.
Palisade parenchyma cells can be either cuboidal or elongated. Parenchyma cells in the mesophyll of leaves are specialised parenchyma cells called chlorenchyma cells (parenchyma cells with chloroplasts). Parenchyma cells are also found in other parts of the plant. Storage of starch, protein, fats, oils and water in roots, tubers (e.g. potatoes ...
[23]: 171 They are found in the walls of large blood vessels and in certain ligaments, particularly in the ligamenta flava. [23]: 173 In hematopoietic and lymphatic tissues, reticular fibers made by reticular cells provide the stroma—or structural support—for the parenchyma (that is, the bulk of functional substance) of the organ.
Anisokaryosis (or variation in the size of the nuclei) is common and often reflects tetraploidy and other degrees of polyploidy, a normal feature of 30-40% of hepatocytes in the adult human liver. [4] Binucleate cells are also common. [citation needed] Hepatocytes are organised into plates separated by vascular channels , an arrangement ...
For example, in a recent TED talk, physicist and entrepreneur Riccardo Sabatini demonstrated that a printed version of the entire human genetic code would occupy some 262,000 pages, or 175 large ...
The epithelial liver cords and biliary system growing out into the septum transversum differentiate into parenchyma. Hematopoietic cells (present in the liver in greater numbers before birth than afterward), Kupffer cells, and connective tissue cells originate in the mesoderm. The pancreas develops from a ventral bud and a dorsal bud that later ...
Being a mesenchymal cell indicates an ability to develop into various other cell types and tissues such as connective tissue, blood vessels, and lymphatic tissue. [5] Some stromal cells can be considered stem cells but not all therefore it can not be broadly termed a stem cell. All MSCs have the ability adhere to plastic and replicate by ...