Which of the following is a richly vascular layer with lots of blood capillaries?
A
Dura mater of brain
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B
Pia mater of spinal cord
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C
Epidermis of skin
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D
Epithelial lining of trachea
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Solution
The correct option is B Pia mater of spinal cord The pia mater allows blood vessels to pass through and nourish the brain. The perivascular space created between blood vessels and pia mater functions as a lymphatic system for the brain.