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.
The Mesophyll. Mesophyll is the leaf's ground tissue, composed primarily of parenchyma containing a great density of chloroplasts (hence, this is chlorenchyma). 1  Pallisade Parenchyma-vertical, columnar cells closest to the upper epidermis.