Nervous System

Brain and spinal cord.

Crainial nerves, spinal nerves, and ganglia.

Also known as afferent, these are our 5 senses and carry impulses into CNS.

Also known as efferent, these send signals to move our bodies. They carry impulses away from the CNS.

Also known as associate neurons, these carry impulses within the CNS.

Support cells of the CNS that are non-conductive

Part of the CNS, these are large branching cells that form the blood brain barrier.

(OLLIE-GO-DEN-DRO-SITES) Part of the CNS, cells with few branches that form myelin.

Part of the CNS, these are ciliated and secrete CSF.

Part of the PNS, these are myelin producing and surround the axon.

Part of the PNS, these isolate and nourish cell bodies in ganglion.

Nerve cell

Epineurium

Fasicle or faciculus

Perineurium

Endoneurium

Dura mater, the tough outer layer that consists of the periosteal layer and meningeal layer

Periosteal layer

Periosteal layer

Arachmnoid membrane

Pia mater

Located on cervical spine lateral to C₁- C₄. The fifth cervical spinal nerve is not part of the cervical plexus.

Spinal nerves C₅ - T₁. Extend laterally from the neck, and continue to the axilla

Spinal nerves L₁ - L₄. Located laterally to the L₁ - L₄ vertebrae.

Contains your sciatic nerve and is located immeadiately inferior to the lumbar plexus.

Also known as the ischiadic nerve. It's the largest and longest nerve in the body. It projects from the pelvis through the greater sciatic notch of the os coaxae and extends into posterior region of thigh.

The sympathetic trunks are a paired bundle of nerve fibers that run from the base of the skull to the coccyx.

Deliver information to the body about stress and impending danger, and are responsible for the familiar fight-or-flight response.

The cauda equina is a structure within the lower end of the spinal column of most vertebrates, that consists of nerve roots and rootlets from above.

Delicate strand of fibrous tissue, about 20 cm. in length, proceeding downward from the apex of the conus medullaris.