NEET PG DENTAL EXAM

BRAIN

SPINAL CORD

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Area of spinal cord where nerves extend to lower limbs
A
Cauda Equina
B
Dorsal Root
C
Foramen Magnum
D
Sacrum
Explanation: 

Detailed explanation-1: -The cauda equina is a group of nerves and nerve roots stemming from the distal end of the spinal cord, typically levels L1-L5 and contains axons of nerves that give both motor and sensory innervation to the legs, bladder, anus, and perineum.

Detailed explanation-2: -Cauda equina syndrome occurs when the nerve roots in the lumbar spine are compressed, cutting off sensation and movement. Nerve roots that control the function of the bladder and bowel are especially vulnerable to damage.

Detailed explanation-3: -The cauda equina consists of the spinal nerve roots L2-S5 and the coccygeal nerve. It lies within the distal third of the vertebral canal and extends into the sacral canal.

Detailed explanation-4: -[4] Similarly, the lower thoracolumbar enlargement gives rise to a plexus of nerves supplying the lower limb muscles in the form of the lumbosacral plexus. This second enlargement extends from the second lumbar segment to the third sacral segment of the spinal cord.

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