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.
Chloroplasts are especially concentrated in the palisade mesophyll and it is in these cells that much of the photosynthesis in a tree takes place. The spongy mesophyll The spongy mesophyll consists of irregularly shaped parenchyma cells which are located between the palisade mesophyll and the abaxial epidermis.Spongy mesophyll cells contain less chloroplast than the palisade mesophyll cells but photosynthesis take place in these cells as well.There are many intercellular air spaces between the spongy mesophyll cells which are interconnected and communicate with the stomata of the abaxial epidermis.he spongy mesophyll The spongy mesophyll consists of irregularly shaped parenchyma cells which are located between the palisade mesophyll and the abaxial epidermis. Spongy mesophyll cells contain less chloroplast than the palisade mesophyll cells but photosynthesis take place in these cells as well.