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layer of meninges composed of white fibrous CT and contains many blood vessels and nerves
helps cushion/ nourishes/ maintain stable ionic concentration/ provides pathway to blood for wastes
functions of the cerebrospinal fluid
anterior median fissure/ posterior median sulcus
two deep longitudinal grooves that divide the cord into right and left halves
transmit nerve impulses to and from the brain/ house the spinal reflexes
functions of the spinal cord
provide two-way communication between the spinal cord and parts of the uppoer and lower limbs, neck, and trunk
cervical - 8/ thoracic - 12/ lumbar - 5/ sacral - 5/ coccygeal - 1
groups of spinal nerves and number of pairs
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