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The outer membrane that covers the brain is


The outer membrane that covers the brain is


Myelin sheath
Dura mater
Arachnoid membrane
Pia mater

The correct answer is B.


The brain is a vital organ in the human body, and it is protected by a covering known as the meninges. The meninges consist of three layers: the dura mater, arachnoid membrane, and pia mater. The question is asking which of these layers is the outermost layer that covers the brain.

Option A, myelin sheath, is incorrect because myelin sheath is a fatty material that covers axons in the nervous system. It is not a layer of the meninges.

Option C, arachnoid membrane, is also incorrect. While it is one of the layers of the meninges, it is located between the dura mater and the pia mater.

Option D, pia mater, is the innermost layer of the meninges that is in contact with the brain.

Therefore, the correct answer is Option B, dura mater. The dura mater is the outermost layer of the meninges that covers the brain. It is a tough, fibrous layer that provides protection to the brain.

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Discussion (2)

  • Dura mater covers arachnoid mater, pia mater and the brain it self. Dura layer is the outermost layer that has direct contact with the inner part of the skull bone

  • The dura mater is a membrane that envelops the arachnoid mater. It surrounds and supports the dural sinuses (also called dural venous sinuses, cerebral sinuses, or cranial sinuses) and carries blood from the brain toward the heart.