Anatomy of spinal cord

How many pairs of nerves are on the spinal cord?

31 pairs

What are the spinal nerves apart of?

The PNS

What are the spinal nerves responsable for?

convey info to and from the structures of the body

How many nerves are in the Cervical spine?

8 pairs

How many nerves are in the Thoracic spine?

12 pairs

How many nerves are in the Lumbar spine?

5 pairs

How many nerves are in the sacral spine?

5 pairs

How many nerves are in the coccygeal spine?

1 pairs

Cervical enlargment

bulge that’s caused by entering/exiting of nerves going to/from upper extremities

Lumbar enlargment

bulge that’s caused by entering/exiting of nerves going to/from lower extremities

Nerve roots

fuse to form spinal nerves serving upper and lower nerves

Where does the spinal cord terminate?

L1/L2 vertebrae

Conus medullaris

when the spinal cord reaches the L1 vertebrae it tapers to a tip

Filum terminale

fused protective layers of the spinal cord

Cauda equina

roots of spinal nerves extend inferiorly from conus medullaris and fills remainder of vertebral cavity

What kind of nerves are spinal nerves?

mixed nerves