Lesson 18 - Body Systems: Nervous

ARACHN-

spider, web; arachnoid membrane

ALBA-

white

AX-, AXON-

axis, axon

CEREBR-

brain

CHOL(E)-

bile, gall

CORTIC- CORTEX

outer layer (of an organ) [orig: bark, rind]

DENDR-, DENDRIT-

dendrite, dendron [orig: tree, pertaining to a tree]

FASCICL-. FASCICUL-

fasciculus [orig: little bundle]

GANGLI-

ganglion [orig: knot]

GLI-, -GLIA-

glia, neuroglia [orig: glue]

GRIS-

gray

MEDULL-

marrow, medulla oblongata

MENING-, -MENINX

meningeal membrane

MYEL-

myelin, spinal cord, bone marrow

NEUR-

neuron, nerve, nervous system [orig: tendon]

PLEX-

plexus [orig: braid]

PONT-, PONS

pons [orig: bridge]

SYNAP-, SYNAPS-

synapse [orig: point of contact]

THALAM-

thalamus [orig: inner chamber]

neuron

a nerve cell, the structural and functional units of the nervous system

fasciculus

a little bundle

substantia grisea

gray matter of the nervous system

substantia alba

white matter of the nervous system

dura mater

outermost meningeal layer

arachnoid mater

web-like membrane, middle meningeal layer

pia mater

soft membrane, innermost meningeal layer

afferent

away from something

efferent

toward something

cerebral cortex

outer layer of the brain

cerebellum

little brain