Whats the definition of dura matter

the tough outermost membrane enveloping the brain and spinal cord

Explanation:

Hi there!

Dura matter is a thick membrane made of dense irregular connective tissue that surrounds the brain and spinal cord.. It’s also the outermost of the 3 layers of membrane called the meninges that protect the main nervous system. The nervous system has 2 main parts.

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1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.