Question

Which of the following is richly supplied with blood capillaries?
A.Duramater
B.Arachnoid
C.Piamater
D.Epidermis

Answer 1

Hint: The meninges are the membranous layers that are closely present around the brain. The dura mater is the outermost tough and fibrous layer. It is followed by the arachnoid mater that forms the middle meninx; it consists of spider-web-like structures within.

Complete step by step answer
-The pia mater is the innermost meninx which is closely adherent to the surface of the brain. It is highly vascular due to the rich supply of blood vessels. Hence, it provides oxygen and nutrients to the cells of the brain
-The pia mater allows blood vessels to pass through it and nourish the brain (cerebral cortex, cerebellum, and brain stem. The perivascular space that is present in between the blood vessels and the pia mater is proposed to be a part of a pseudo lymphatic system for the brain (glymphatic system). When the pia mater becomes irritated and inflamed it results is meningitis
-Meningitis occurs when the fluid surrounding the meninges becomes infected and inflamed. The most common causes of meningitis are viral and bacterial infections. Symptoms of meningitis include pain in the neck and back, shivering and cold, rashes, etc.

Hence option C is correct.

Notes:
-Dura mater is a thick and dense membrane made of dense irregular connective tissue that surrounds the brain and spinal cord. It is the outermost of the three layers of membrane called the meninges that protect the central nervous system from coup and contrecoup injuries
-The subarachnoid space has the cerebrospinal fluid (CSF), it provides nutrition to the CNS and also protects it from shock
-Dural venous sinuses are present in the subdural space that are the major venous drainage of the brain