Ch. 13: Spinal Cord & Spinal Nerve questions
with verified answers
anterior median fissure/ posterior median sulcus Ans✓✓✓two deep
longitudinal grooves that divide the cord into right and left halves
anterior/ posterior/ lateral funiculi Ans✓✓✓three regions of white
matter
arachnoid villi Ans✓✓✓reabsorbs CSF
ascending Ans✓✓✓tracts that carry information to the brain
axons Ans✓✓✓nerve fibers within the ascending and descending tracts
cauda equina Ans✓✓✓formed by the lumbar, sacral, and coccygeal
nerves at the end of the cord
cerebrospinal fluid barrier Ans✓✓✓protects the CNS from harmful
substances in the blood
cervical - 8/ thoracic - 12/ lumbar - 5/ sacral - 5/ coccygeal - 1
Ans✓✓✓groups of spinal nerves and number of pairs
cervical enlargement Ans✓✓✓supples the nerves to the upper limbs
, choroid plexuses Ans✓✓✓masses of blood capillaries in brain
ventricles that produce CSF
conus medullaris Ans✓✓✓conical tapering of spinal equine
conus medullaris Ans✓✓✓extension of the lumbar enlargement
descending Ans✓✓✓tracts that carry information away from the brain
dura mater Ans✓✓✓forms the inner periosteum of the skull bones
dura mater Ans✓✓✓layer of meninges composed of white fibrous CT
and contains many blood vessels and nerves
dura mater/ arachnoid mater/ pia mater Ans✓✓✓three layers of the
meninges (superficial to deep)
endoneurium Ans✓✓✓surrounds each nerve fiber
ependymal Ans✓✓✓cells that cover capillaries and form a
cerebrospinal fluid barrier
with verified answers
anterior median fissure/ posterior median sulcus Ans✓✓✓two deep
longitudinal grooves that divide the cord into right and left halves
anterior/ posterior/ lateral funiculi Ans✓✓✓three regions of white
matter
arachnoid villi Ans✓✓✓reabsorbs CSF
ascending Ans✓✓✓tracts that carry information to the brain
axons Ans✓✓✓nerve fibers within the ascending and descending tracts
cauda equina Ans✓✓✓formed by the lumbar, sacral, and coccygeal
nerves at the end of the cord
cerebrospinal fluid barrier Ans✓✓✓protects the CNS from harmful
substances in the blood
cervical - 8/ thoracic - 12/ lumbar - 5/ sacral - 5/ coccygeal - 1
Ans✓✓✓groups of spinal nerves and number of pairs
cervical enlargement Ans✓✓✓supples the nerves to the upper limbs
, choroid plexuses Ans✓✓✓masses of blood capillaries in brain
ventricles that produce CSF
conus medullaris Ans✓✓✓conical tapering of spinal equine
conus medullaris Ans✓✓✓extension of the lumbar enlargement
descending Ans✓✓✓tracts that carry information away from the brain
dura mater Ans✓✓✓forms the inner periosteum of the skull bones
dura mater Ans✓✓✓layer of meninges composed of white fibrous CT
and contains many blood vessels and nerves
dura mater/ arachnoid mater/ pia mater Ans✓✓✓three layers of the
meninges (superficial to deep)
endoneurium Ans✓✓✓surrounds each nerve fiber
ependymal Ans✓✓✓cells that cover capillaries and form a
cerebrospinal fluid barrier
