How did the arachnoid mater get its name?
The arachnoid mater, named for its spiderweb-like appearance, is a thin, transparent membrane surrounding the spinal cord like a loosely fitting sac. Continuous with the cerebral arachnoid above, it passes through the foramen magnum and descends caudally to the S2 vertebral level.
What is the name of the space deep to the arachnoid mater?
The subdural space is the space that potentially exists between the meningeal layer of the dura and the arachnoid mater. Similar to the epidural space, the subdural space typically exists only under pathological conditions.
What does the name dura mater translate to?
The name dura mater derives from the Latin for tough mother (or hard mother), a loan translation of Arabic أم الدماغ الصفيقة (umm al-dimāgh al-ṣafīqah), literally ‘thick mother of the brain’, matrix of the brain, and is also referred to by the term “pachymeninx” (plural “pachymeninges”).
What does dura mater literally mean?
tough mother
Examples of dura mater in a Sentence Recent Examples on the Web The inside, the dura mater, which means ‘tough mother,’ is a tough lining of skin around the brain. —
How does arachnoid mater protect the brain?
Arachnoid mater: Connected to the dura mater on the side closest to the CNS, this middle layer includes a network of fibers and collagen that are part of the suspension system that helps protect the brain and spinal cord from sudden impact. It has blood vessels that deliver oxygen and nutrients to the spinal cord.
Can you see arachnoid mater?
The arachnoid mater lies under the dura mater, and arteries and veins run on top of it. Brain with arachnoid mater, and an area where it is removed, showing cerebral gyri covered by the translucent pia mater. Spinal dura mater opened, arachnoid mater visible.
What is the purpose of arachnoid mater?
Arachnoid Mater It contains cerebrospinal fluid, which acts to cushion the brain. Small projections of arachnoid mater into the dura (known as arachnoid granulations) allow CSF to re-enter the circulation via the dural venous sinuses.
How does dura mater protect the brain?
The dura provides the brain and spinal cord with an extra protective layer, helps to keep the CNS from being jostled around by fastening it to the skull or vertebral column, and supplies a complex system of veinous drainage through which blood can leave the brain.
What is the function of arachnoid mater?
What is the purpose of the dura mater?
The dura mater is a sac that envelops the arachnoid and has been modified to serve several functions. The dura mater surrounds and supports the large venous channels (dural sinuses) carrying blood from the brain toward the heart. The dura mater is partitioned into several septa, which support the brain.
What language is dura mater?
The name dura mater derives from the Latin for tough mother, a loan translation of Arabic أم الدماغ الصفيقة, literally thick mother of the brain, matrix of the brain. and is also referred to by the term “pachymeninx”.
What is the function of the arachnoid mater in the brain?
