Spinal cord injury - go@usmle1

[ArchivalUser]

Injury at what level of the spinal cord cause hypereflexia of the bladder ?

[ArchivalUser]

what about hyporeflexia of the bladder ?

[ArchivalUser]

1.Any damage above the conus medullaries = break viseral sensory stretch ->viseral motor detrusor contraction to let urin out reflex =controled by UMN =hyperreflexia =small bladder with high freq with little stretch
2.pelvic plexus damage(cauda equina) =Micturation center =damage to bladder stretch -contraction reflex arc but causes hyporeflexia =overflow incontinence
Correct me if am wrong

[ArchivalUser]

sympathetic activity by L 3, 4
parasympathetic by S 2, 3, 4
loss of sympathetic would cause hyper reflexia, so must be above L 3