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PARAPLEGIA. Intradural. Extradural. INTRAMEDULLARY CORD COMPRESSION. Glioma Syringomyelia Tuberculoma A-V malformations Ependymoma Hematomyelia. EXTRAMEDULLARY. EXTRADURAL. INTRADURAL. Fracture spine-traumatic -pathological :Mets, TB .,Osteoporosis P.I.D Cervical spondylosis
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Intradural Extradural
INTRAMEDULLARY CORD COMPRESSION Glioma Syringomyelia Tuberculoma A-V malformations Ependymoma Hematomyelia
EXTRAMEDULLARY EXTRADURAL INTRADURAL • Fracture spine-traumatic -pathological :Mets, TB .,Osteoporosis • P.I.D • Cervical spondylosis • Spondylolisthesis • Cranio – vertebral anomalies • Spina – bifida • Meningomyelocoele • Epidural abscess • Neurofibroma • Meningioma • Malignant metastasis • Arachnoiditis • Lipoma, , Fibroma • Arachnoid cyst
NON – COMPRESSIVE MYELOPATHY MULTIPLE SCLEROSIS SYRINGOMYELIA SUB ACUTE COMBINED DEGENERATION ARTERIOVENUS MALFORMATION LATHYRISM HERIDATORY SPASTIC PARAPLEGIA AMYOTROPHIC LATERAL SCLEROSIS PRIMARY LATERAL SCLEROSIS RADIATION MYELOPATHY ADRENOMYELONEUROPATHY PROGRESSIVE ENCEPHALOMYELITIS PARANEOPLASTIC MYELITIS
Micturition Centers • The Micturition Control Center in Frontal Lobe • Inhibitory signals to the detrusor muscle to prevent the bladder from emptying (contracting) • Until a socially acceptable time and place to urinate is available. • Pontine Micturition Center (PMC) • Coordinates the urethral sphincter relaxation and • Detrusor contraction to facilitate urination.
Role of Pontine Center (PMC) • Stimulation of the PMC causes • Opening of urethral sphincters • Contraction of detrusor • Resulting in bladder emptying • The PMC is affected by emotions • Some people micturate when they are excited or scared • The ability of the brain to control the PMC is part of the social training • Usually the brain takes over the control of the pons at 3-4 years of age
Role of Frontal Center • Stimulation of the Frontal Center causes • Inhibition of detrusor, until a convenient time & place is available for micturition. • By suppressing the Pontine Center (PMC)
Role of Spinal Cord • The sacral reflex center is the primitive voiding center • Responsible for bladder contractions