1 Tuberculous pleuritis may occur in some people who have the lung disease from tuberculosis.  The pleural disease occurs from the rupture of a diseased area into the pleural space, the space between the lung and the lining of the chest and abdominal cavities.
The root apical meristem is a region of growth tissue near the tip of each root. The meristematic cells in this region grow in two directions, both backward toward the above-ground shoot and forward toward the tip of the root.
Let us recognize that there are 3 meristematic regions in the plant: I. Apical meristems are located at the apices or tips-at root and shoot tips and are directly involved in their elongation They create derivatives which form primary growth. 1  the protoderm which forms the outer dermal layer of tissues,2  the ground meristem which forms the cortical cells and.. Apical meristems are located at the apices or tips-at root and shoot tips and are directly involved in their elongation They create derivatives which form primary growth. 1  the protoderm which forms the outer dermal layer of tissues, 2  the ground meristem which forms the cortical cells and.