Spinal cord and nerves Flashcards
The spinal cord starts at the ___
Foramen magnum
The spinal cord ends at the ____
Inferior border of the first lumbar vertebrae
What lies on the dorsal side of the vertebrae
Spinous process
What lies on the ventral side of the vertebrae
Vertebral body
The spinal cord sits within the ________
Meningeal sack, filled with cerebrospinal fluid
Taped cone-like end of the spinal cord
Conus medullaris (cone-us medullaris)
Fibrous, non neural tissue which extends from the conus medullaris to the end of the spinal cord
Filum terminale
Collection of spinal nerves from the 2nd lumbar vertebrae onwards to the coccygeal vertebrae
Cauda equina
The spinal cord has ___ pairs of spinal nerve
31
How many pairs of nerves are in each set of spinal nerves down the spinal cord
12 pairs of thoracic spinal nerves
8 pairs of cervical spinal nerves
5 pairs of lumbar spinal nerves
5 pairs of sacral spinal nerves
1 pair of coccygeal spinal nerves
Sensory (afferent) information comes into the _________ aspect of the spinal cord from the PNS
Dorsal (posterior)
Motor (efferent) information goes out of the _________ aspect of the spinal cord to the PNS
Ventral (anterior)
Where are the somatic motor neuron cell bodies found?
They are located in the ventral horn
Where are the autonomic motor neuron cell bodies found?
The are located in the lateral horn
Carries efferent output to the back, and carries afferent input in from the back
Dorsal Ramus
