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.
THE ZONES OF A ROOT. Zone of protection also known as the Root Cap: envelope that protects the root as it pushes through the soil. Meristem: tissue at the tip of the root composed of rapidly multiplying cells. Meristem tissue is found in many areas of the plant. These are all tissues that have rapidly dividing cells for cell growth.