meninges. plural of meninx; the three membranes covering the brain and spinal cord: the dura mater, arachnoid, and pia mater. adj., adj meninÂ´geal. Meninges of the central nervous system.tymology: Gk, meninx, membrane. the three membranes enclosing the brain and the spinal cord, comprising the dura mater, the pia mater, and the arachnoid membrane. The pia mater and the arachnoid can become inflamed by bacterial meningitis, causing serious complications that may be life-threatening. meningeal, adj.
If you eliminate the underlying causes of lawn stress, the chinch bugs are less likely to return. Causes of Stress In Turfgrasses. Some causes of grass plant stress include: Mowing improperly: mowing too short, using dull blade. Over-use of nitrogen fertilizer, which stimulates excessive grass foliage growth.
The uric acid is absorbed by the Malpighian tubules and the low pH in the tubule lumen causes uric acid to precipitate out as dry matter. The nitrogen waste is excreted with other solid waste through the anus of the grasshopper.rasshopper Malpighian Tubules. The challenges of survival for terrestrial insects such as the grasshoppers (order Orthoptera) include conserving water, particularly in arid regions of the world including the deserts and grasslands.