جلسه ی سوم اعصب

1. Spinal cord (1)Spinal cord (1)

8. Spinal cord
Meninges,
Dura mater
Arachnoid, Pia mater
Subarachnoid space
Denticulate Ligament
Leptomeninx & pachymeninx

17. Spinal cord
External feature
Cervical enlargment
Lumbar enlargment
Conus medullaris
Filum Terminal
Cauda equina
Anterior median fissure
Posterior median sulcus
Anterolateral sulcus
Posterolateral Sulcus

25. Spinal nerve

35. Sympathetic part

38. Internal structure
White matter
Gray matter
• Ant column
• Lat column
• Post column

40. Internal structure
White matter
Gray matter
• Anterior horn
• Posterior horn
• Lateral horn

45. Gray matter
Rexed Lamina
10 lamina
Lamina I, most posterior part of Dorsal
horn &Lamina IX , the most ant. Part of
anterior horn
Lamina X around central canal
Lamina I-VI( post. horn)
II , III (Substantia gelatinosa)
Lamina VII( Clark & Intermediolateral)
Lamina VIII ( interneuron)
Lamina IX ( Ant horn motor n)
Lamina X

48. white matter
Tract or Fasciculus
Ascending Tract (Sensory receptor )
Sensory n. ending, Dorsal root ganglion
( 1st
neuron), Dorsal horn ( 2nd
neuron)
Thalamus (3rd
neuron)
All ascending tract passed through at
least 3 neuron
Extroceptive (Substantia gelatinosa ) , lateral
Spinothalamic (pain), Ant spinothal (Simple,
crude touch)
Fine touch ( Gracilis & cuneatus fasciculu)