ANATOMY
NEURORADIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the largest portion of the diencephalon, which communicates sensory and motor information between the body and the cerebral cortex
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the middle layer of the meninges, which consists of many thin fibers that connect it to the pia mater
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nerves that only conduct messages from the sensory receptors to the central nervous system
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the series of vertebrae that extends from the cranium to the coccyx, providing support and forming a flexible bony case for the spinal cord; also called the spine
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Detailed explanation-1: -Your arachnoid mater, the middle layer of your meninges, lies directly below your dura mater . It’s a thin layer that lays between your dura mater and pia mater. It doesn’t contain blood vessels or nerves.
Detailed explanation-2: -The middle layer is the arachnoid, a web-like structure filled with fluid that cushions the brain. The tough outer layer is called the dura mater.
Detailed explanation-3: -The pia mater is anchored by astrocyte processes. It is located very close to the brain surface and covers all external surfaces of the CNS. The term “pia mater” means “tender matter.” It is composed of delicate connective tissue and has many tiny blood vessels.
Detailed explanation-4: -The arachnoid mater makes arachnoid villi, small protrusions through the dura mater into the venous sinuses of the brain, which allow CSF to exit the subarachnoid space and enter the blood stream.
Detailed explanation-5: -The deepest layer of the meninges, the pia mater, is composed of two layers and, unlike the arachnoid, follows the contours of the sulci and gyri. The outer layer of the pia, referred to as the epipial layer, contains collagen fibers; the inner layer, or the intima pia, contains elastic and reticular fibers.