the spinal cord Flashcards
where is the white matter on the spinal cord
outer layer
where is the grey matter on the spinal cord
centre
what are the segments of the spinal cord
cervical
thoracic
lumbar
sacral
coccygeal
how many pairs of nerves are there in total along the spinal cord
31
how many nerves are in the cervical region of the spinal cord
8
how many nerves are in the thoracic region of the spinal cord
12
how many nerves are in the lumbar region of the spinal cord
5
how many nerves are in the sacral region of the spinal cord
5
how many nerves are in the coccygeal region of the spinal cord
1
when does the spinal cord end
L2
how is grey matter shaped
like a butterfly
what is grey matter composed of
neuronal cell bodies
what is white matter composed of
nerve axons
what is the spinal cord wrapped in
the meninges
what is the outermost meninge
dura mater
what is the middle meninge
arachnoic matter
what is the deepest meninge
pia mater
what are the layers of the dura mater
periosteal and meningeal
what is found between the layers of the dura mater
epidural space
what is found between the arachnoid and pia mater
the arachnoid space
what fills the arachnoid space
cerebrospinal fluid
what does the dorsal horn contain neurons from
the somatosensory neurons which provide information from the body to be transmitted to the brain
what does ventral horn matter contain
motor neurons which exit the spinal cord to innervate skeletal muscle
which section of the spinal cord contains the neurons that innervate the visceral and pelvic organs
intermediate column and lateral horn
