NERVOUS SYSTEM SPECIAL SENSE
SPINALCORD
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Extension of spinal nerves beyond the end of the spinal cord
|
|
|
A network of nerves supplying the lower limbs
|
|
|
A network of nerves supplying the upper limbs
|
|
|
The root of a spinal nerve that carries motor impulses
|
Detailed explanation-1: -The cauda equina (CE) is a bundle of intradural nerve roots at the end of the spinal cord, in the subarachnoid space distal to the conus medullaris . Cauda is Latin for tail, and equina is Latin for horse (ie, the “horse’s tail").
Detailed explanation-2: -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-3: -The collection of nerves at the end of the spinal cord is known as the cauda equina, due to its resemblance to a horse’s tail. The spinal cord ends at the upper portion of the lumbar (lower back) spine.
Detailed explanation-4: -The cauda equina is formed by the L2–L5, S1–S5, and coccygeal spinal nerve roots located in the dural sac. Cauda equina syndrome is characterized by radiating low-back pain, saddle anesthesia, bowel and bladder impairment, weakness, loss of sensation, and hyporeflexia or areflexia in the lower extremities.
Detailed explanation-5: -The cauda equina is the bundle of nerve roots located at the lower end of the spinal cord.