Spinal Cord Flashcards
Anterior horn
lower motor neurons
dorsal horns
sensory interneurons
lateral horn T1-L2
SNS GVE pre-gang
lateral horn S2-S4
PaNS GVE pre-gang
Brown-Sequard Syndrome and symptoms
hemisection of spinal cord
- loss of pain and temp on contralateral side of body
- loss of touch and proprio on ipsilateral side of body
- ipsilateral loss of motor function
protopathic
pain, temp, crude touch
spinothalamic tract/ anterolateral funiculi
epicritic
fine/discriminative touch, proprioception, vibration
-large, rapid fibers, myelinated
posterior/posterolateral columns –> medial lemniscus (brainstem)
Aa
motor to skeletal muscle (a-motor neuron)
Ad
sensory from free nerve endings for pain, temp
-slightly myelinated
C
free endings for pain, temp, smell
- unmyelinated
Pancinian corpuscle
rapidly adapting mechanoreceptor
- gross touch and vibratory
Missner’s corpuscle
rapidly adapting mechanoreceptor
Merkel’s disks
slowly adapting mechanoreceptor
Ruffini organs
slowly adapting mechanoreceptor
Somatosensory cortex broadman’s areas
3a, 3b, 2, 1
Tabes Dorsalis
part of neurosyphilis
- selective destruction of posterior column
- loss of fine touch, vibration, and proprioception
Spinal lemniscus is made up of what 2 tracts?
lateral spinothalamic tract - pain and temp
anterior spinothalamic tract - crude touch
cingulate gyrus and pain
emotional response to pain
insula and pain
autonomic response to pain
spinoreticular division
emotional aspects (ow that hurts)
spinomesencephalic
modulate pain (ahh better)
Spinocerebellar tract function?
Ipsilateral proprioception to cerebellum
