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.
Woody tissue: xylem, phloem and ray tissue. In this young tree you can easily identify the layers of woody growth. #1 or the pith is found in the center of the tree. Generally this only found in very young. trees, as it is crushed with the growth of later xylem layers.