Anatomy 5 Spinal Cord
Links:
Time: 2025-04-10
Content:
Summary/things to note:
flashcarding directive nervous system organisation meninges and layers anatomy of the spinal cord and relationships blood supply of the spinal cord describe the spinal nerve compoistion and functions somatic and autonomic distributions
Objectives:
organisation of the nervous system meninges and layers anatomy of the spinal cord and relationships blood supply of the spinal cord spinal nerve composition and functions somatic nervous system and functions autonomic nervous system and divisions the 4 pathways of autonomic sympathetic innervation
Objective based questioning:
Rambles:
conus medullaris filum terminale cauda equina meninges
spinal cord is an extension of the brain stem
lateral stabilisation of the spinal cord is the ligamentum denticulatum (piamater)
dural sac - dura mater surrounding the cauda equina
lecture outline
autonomic sympathetic and parasympathetic systems
organisations of the spinal cord cauda equina conus medullaris filum terminale
meningal organisation duramater arachnoid mater pia mater
blood supply of the spinal cord posterior x2 and anterior spinal arteries and aldo segmental spinal arteries which inject into the spinal cord like rootlets
spinal arteries originate from brainstam
venous dranage 3 anterior and 3 posterior spinal veins
Featrues of the spinal cord
lateral horn is only present form t1-l2 laternal horn is important for the autonomic ?sympathetic system ventral motor dorsal sensory
Soamtic and visceral parts of the nervous system
Somatic part of the nervous system
Motor and sensory dorsal root ganglion
Visceral
Sympathetic (fight or flight) sympathetic chain ganglia connects via grey (medial) and white (lateral) rami communicans
sympathetic outflow
- peripheral sympathetic innervation at the level of origin of the preganglionic fibres
Parasympathetic (rest and digest) outflow is brainstem cranial nerves and S2-S4 segments