The normal structure of the heart (left) in comparison to two common locations for a ventricular septal defect (right), the most common form of congenital heart defect.
Parenchyma (Para-beside, enchyma-In poured) Parenchyma is the fundamental tissue of the plant body. It is found in every part of the plant body like pith and cortex of stem and root, mesophyll of leaves, flesh of fruits, floral parts and even in xylem and Phloem. Cells have thin primary walls and polyhedral shapes.
(pÄ­th) The soft, spongy tissue in the center of the stems of most flowering plants. Composed of parenchyma cells, the pith is gradually compressed by the inward growth of the vascular tissue known as xylem. As the plant grows older, the pith dries out and often disintegrates, leaving the stem hollow.