cross-sectional anatomy of spinal cord

gray matter
inside, shaped like letter H with dorsal(posterior) horns, ventral (anterior) horns (thicker); Poliomyelitis and amyotrophic lateral sclerosis (ALS)

white matter
surrounds gray matter; sends impulses up/down cord (divided)

funiculi
ventral (anterior) columns subdivided into tracts

ascending tracts
carry sensory info up spinal cord; lateral spinothalamic

descending tracts
motor impulses down cord; lateral corticospinal tracts

dorsal root ganglions
cell bodies of sensory neurons

decussation
tracts corss over opposited side of body in medulla (contralateral)

ipsilateral
impulses stay on the same side of body

transverse tracts
go from one side to the other

Gray matter Deeper layer; contains all the nerve cell bodies; at the center of the cord; cell bodies are organized by function and are organized in nuclei Dorsal horn contains SENSORY cell bodies WE WILL WRITE A CUSTOM ESSAY SAMPLE …

dura mater This layer above the arachnoid is the? arachnoid mater This blue layer is the? WE WILL WRITE A CUSTOM ESSAY SAMPLE ON ANY TOPIC SPECIFICALLY FOR YOU FOR ONLY $13.90/PAGE Write my sample pia mater this white layer …

Functions of the Spinal Cord Conducts impulses from brain, and integrates reflexes Meninges Cover and protect CNS. Spinal and Cranial. WE WILL WRITE A CUSTOM ESSAY SAMPLE ON ANY TOPIC SPECIFICALLY FOR YOU FOR ONLY $13.90/PAGE Write my sample Meningeal …

State the 3 principal functions of the spinal cord • Conduction – bundles of fibres conducting information up and down the spinal cord. Carrying efferent and afferent information ie. Sensory information to reach the brain and motor commands to reach …

Name 3 types of glial cells 1. microglia 2. astrocytes 3. oligodendrocytes/ Schwann cells Oligodendrocytes are responsible for myelinating the CNS WE WILL WRITE A CUSTOM ESSAY SAMPLE ON ANY TOPIC SPECIFICALLY FOR YOU FOR ONLY $13.90/PAGE Write my sample …

Meninx (sing.)/ Meninges (pl.) Three protective, connective tissue covering that encircle the spinal cord and brain. From superficial to deep they are the (1) dura mater, (2) arachnoid mater, and (3) pia mater. Dura Mater The most superficial of the …

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