NEET PG DENTAL EXAM

BRAIN

SPINAL CORD

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The ligamentum denticulatum is a thickening of:
A
Epineurium
B
Arachnoid mater
C
Dura mater
D
Pia mater
E
Ligamentum flavum
Explanation: 

Detailed explanation-1: -Denticulate ligaments are the triangular-shaped extensions of the spinal pia mater, that extend sideways from the spinal cord. In total, 21 pairs of denticulate ligaments can be seen all along the length of the spinal cord (from the foramen magnum to T1 vertebral level).

Detailed explanation-2: -At the level of the medullary cone, the thickness of the pia mater is reduced to 80–100 m; its thickness continues to decrease to merely 50–60 m in the origins of the cauda equina. At the nerve root level, the thickness of the subpial compartment is 10–12 m. FIGURE 41. Human pia mater and spinal cord.

Detailed explanation-3: -Denticulate ligaments (also known as dentate ligaments) are lateral projections of the spinal pia mater forming triangular-shaped ligaments that anchor the spinal cord along its length to the dura mater on each side.

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