Spinal Cord and Gray and White matter

What are anterior horns?

-These horns are always there. -They are cell bodies of motor neurons -Send axons out via ventral roots -This horn has cell bodies

What are posterior horns?

-These horns are always there. -They are mostly interneurons receiving info from sensory neurons, whose cell bodies are in dorsal root ganglia.

Spinal cord white matter

-They are myelinated and unmyelinated axons that allow communication between spinal cord and brain and between different spinal cord segments.

Where do lateral horns exist?

In thoracic and superior lumbar segments.

Where is the gray matter in the spinal cord?

It is the inner region, mostly neuron cell bodies. Forms "H". The crossbar is called gray commissure- contains central canal; 2 posterior horns and 2 anterior horns