Spinal Meninges Flashcards
(20 cards)
3 Meninge Layers
DAP
Dural Sac
Filum Terminlae
Filum Terminale
Pia from infeor most aspuct of conus mellairs
What does fillum terminal push through?
Dural sac and taking arachnoid and dura mater with it
What does Filum terminale form?
Strong ANchor on posterior coccyx
Arachnoid Mater
Middle Layer
Spider mother
Delicate & avascular
What does the arachnoid matter enclose?
CSF with subarachnoid space btwn it and pia mater
CSF is a cushion for what?
the spinal cord, clear odorless, lwo in protein and celllular content
Pia Mater
Inner most matter
MOST Delicate mother
Pia matter closley follows the surface of the
Cord
What does Pia matter directly cover?
Spina Never roots and blood vessels
What does pia matter continue as?
Filum Terminale
Spinal nerves caries what two things?
Dorsal ( afferent sensory) & ventral (efficient motor) from one spinal segment
Where do the spinal nerves run in?
Subarachnoid space covered in pia matter
Each spinal nerve pierces what?
Dura matter separately taking arachnoid mater with it
Where does the spinal cord end?
L1 / L2 level
COnus MEdullaries
Cauda Equina
Lumbar cistern
enlargement of subarachnoid space to accommodate cauda equina
Derma tomes/ Myotomes
area of skin innervated by single spinal nerve, muscle receiving innervation from a single spinal level
Blending of spinal segments in plexuses
Cervical ,
Brachial, Lumbar, Sacral
Myotomes
C3-5: Diaagprhan ( dont C5: Elbow Flexion ( eat C6: wrist ( with) C7: Elbow Extension ( eggs) C8:FInger flexion T1: finger obduction T1-T2: CHest walls/abs L2: hip Flexion L3 Knee extension L4: Ankle dorsi flexion L5: Toe extension s1: ankle plantarfelxion S3-S5: Bowel, bladder sexual
