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