spinal cord and spinal nerves Flashcards
how many cervical vertebrae are there?
7
how many thoracic vertebrae are there?
12
how many lumbar vertebrae are there?
5
how many sacral vertebra are there?
5
how many coccygeal vertebrae are there?
1
how many vertebra are there?
30
how many pairs of spinal nerves are there?
31
What is the end of the spinal cord called?
conus medullaris
what is the difference between the dura around the spinal cord compared to the cranial cavity?
the spinal dura is only a single layer
where is the subdural space?
between the dura and arachnoid mater
where does spinal cord end in adults?
L1/L2
where does spinal cord end in neonates?
L3
where do the somatic and visceral sensory nerve fibres exit the spinal cord?
the dorsal root
where do the somatic and visceral motor fibres exit the spinal cord?
the ventral root
