spinal cord or medulla spinalis Flashcards
(23 cards)
in adults and new born babies where does the spinal cord begin and end
adults ….. foamen magum to L1
babies ,,, foramen magnum to L3
intumescentia cervicalis and lumbosacralis starts from where and ends where this is a slight swelling on the spinal cord
cervicalis ….c4..T1
Lumbosacralis .. L1 OR 2 .. S3
what is cauda equina
structure formed by the nerve roots around the phylum terminale
what is the importance of the high level termination in the medulla spinalis
in the injuries of the spinal cord under the L2 , only the nerve roots are damaged
the csf can be obtained without injuring the spinal cord
what are the sheats that wrap the medulla spinalis
dura mater .. thick and rough
arachnoid mater
pia mater…. thin soft and delicate
the spinal meninges i.e the dura mater etc are continues or have the same functions with
cranial meninges
between the arachnoid and pia mater is what space that contains the csf
subarachnoid space
between the dura mater and the bone is what
epidural space
between the dura mater and the bone is what
epidural space
the dura mater attaches where
foramen magnum and the C2 AND C3
the duramater extends along the nerve roots and continues with what
epineurium
the arachnoid mater fuses with what
proximal part of the spinal ganglion
what is the modification of pia mater
filum terminale
what is the modification of pia mater
filum terminale
pia mater has how many layers
lamina erxterna
lamina interna
in the lumbal puncture the supracristal plane passes through what vertebrae
L4
in spinal anaesthesia the anesthetic agent is injected into where
cerebrospinal fluid
why should the epidural anesthesia be injected below the L2
to avoid puncturing the medulla spinalis
the exit of the spinal nerves from the medulla spinalis is called
segment
all spinal nerves innervate innervates the skin except
C1
what is a dermatome
the skin segment innervated by the posterior root of a spinal nerve
the outter layer of the medulla spinalis consists of white matter that contains what
myelin sheated nerve fibers
external surface of the spinal cord consists of
longitudinal sulcus
intumescentia
arbitary border btw spinal cord and brain stem
