myelinated nerve Flashcards
what is a nerve
a bundle of fibers that transmit impulses from the brain and spinal cord
what are fibers in nerves mostly composed of
axons
what is epineurium
dense connective tissue encircling a nerve
what are fascicles
bundles of axons within the epineurium
what encircles each fascicle?
each fascicle is encircled by connective tissue called the perineurium
what is the space between the perineurium and fascicle
space artifacts
what is the connective tissue surrounding each individual axon
endoneurium
what is white space around the axon
myelin
what are many fascicles bundled together
a nerve
define the tern nerve
a bundle of axons in the peripheral nervous system
interfascicular connective tissue
where the epineurium extends into the interior of the nerve as a fibrous network between fascicles
sometimes axons will appear as shriveled, distorted, or shrunken. this is known as an…
artifact
