a thin piece of wood or other rigid material used to immobilize a fractured or dislocated bone, or to maintain any part of the body in a fixed position. 2. one of a number of thin strips of wood woven together to make a chair seat, basket, etc.
If you take a close look at epithelial cells using a microscope, you will see them tightly packed together. This helps make a protective barrier for our bodies. There are also some special door-like connections between each epithelial cell called gap junctions. The gap junctions are where the cells exchange nutrients.
What is SPONGY LAYER? Chlorenchyma in which the cells are irregularly lobed leaving very large continuous intercellular spaces. Spongy mesophyll or spongy parenchyma is usually present towards the lower surface of dorsiventral leaves of mesomorphic dicotyledons. See palisade, PALISADE.