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Lecture 14

BIMS 201 Lecture Notes - Lecture 14: Conus Medullaris, Arachnoid Granulation, Venous Plexus


Department
Biomedical Science
Course Code
BIMS 201
Professor
Elizabeth A.Crouch
Lecture
14

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Ligaments that support the vertebral column
Ventral side:
Anterior and
posterior
longitudinal
ligaments
Dorsal
side:
Important
since these
are the
structures
your needle
will pass
through!
Contents of Spinal Space:
Spinal cord
Cerebrospinal fluid
Conus medullaris
Contents of epidural space:
Fat
Areolar tissue
Lymphatics
Blood vessels including the Baston venous plexus
CSF:
Clear fluid that fills the subarachnoid space
Total volume in adults is 100-150 ml
Volume found in the subarachnoid space is 25-35 ml
Continually produced at a rate of 450 ml per 24 hour period
replacing itself 3-4 times
Reabsorbed into the blood stream by arachnoid villi and
granulations
Specific gravity is between 1.003-1.009 (this will play a crucial
role in the baracity of local anesthetic that one chooses)
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