The connective tissue layer that lies directly on the surface of the brain and spinal cord is the

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The pia mater is the delicate connective tissue layer that directly covers the surface of the brain and spinal cord. The other choices, such as the arachnoid and dura mater, are also layers of connective tissue, but they are located further away from the brain and spinal cord. The endocranium is a layer of bone that lines the inside of the skull, but it is not a connective tissue layer.

The Connective Tissue Layer That Lies Directly on the Surface