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spinal cord

continuation of the brain stem, associaton and communication center

conus medullaris

tapered end/cone-shaped end of the spinal cord

filum terminale

This structure is made up of pia mater. It anchors the brain and spinal cord to the coccyx

gray matter

Brain and spinal cord tissue that appears gray with the naked eye; consists mainly of neuronal cell bodies (nuclei) and lacks myelinated axons.

dorsal horns

two dorsal arms of spinal gray matter that recieves sensory information and contain sensory fibers and interneurons

ventral horns

two ventral projections of the spinal gray matter that contain cell bodies of motor neurons of somatic nervous system(voluntary)

white matter

whitish nervous tissue of the CNS consisting of neurons and their myelin sheaths

autonomic nervous system

part of peripheral nervous system of vertebrates that controls involuntary actions of the smooth muscles, heart and glands

parasympathetic division

The branch of the autonomic nervous system that generally conserves bodily resources & maintains body functions

sympathetic division

the part of the autonomic nervous system that arouses the body to deal with perceived threats; fight or flight

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