Dermatomes%20overlap

1
Dermatomesoverlap
Skin
Peripheral nerve
Dorsal root
Ventral root
2
Dermatomesoverlap
Skin
Peripheral nerve
Dorsal root
Ventral root
3
Spinal cords
Dorsalcolumn
Dorsal rootganglion
Lateral column
Anterolateral column
Ventral column
Dorsal root
Spinalnerve
Dorsal horn
Intermediate zone
Ventral horn
Ventral root
4
Receptor projections to systems
5
LgTermPatterns
Reminder Rexeds laminae
6
DC lesion
Somatotopic organization of the dorsal columns
Rostral
Caudal
7
LgSmTermPatterns
Lamina 5
8
LgSmTermPatterns
Lamina 5
9
Anterolateral system X
10
Spinal Hemisection
Ipsilateral loss of touch
Contralateral loss of pain (2-3 segments caudal
to injury)
Mechanoreceptor
Nociceptor
11
Syringomyelia
Site of lesion
Bilateral loss of pain thermal senses
Preservation of mechanosensations
12
Somatotopy of spinal paths
13
Anterolateralsystem
Dorsal column-medial lemniscalsystem
Also Reticular formation Superior colliculus
(mesencephalon)
14
Somatic Sensory Thalamus
15
Leg area
Arm area
Face area

Internal capsule

Ventral posterior nucleus