The whole is enclosed in a thin, delicate sheath, known as neurilemma.
The deeply stained oblong nuclei indicate the nerve corpuscles within the neurilemma.
neurilemma, nū-ri-lem′a, n. the external sheath of a nerve-fibre.
The outer sheath (neurilemma) is also continuous throughout the length of the fibers.
neurilemma neu·ri·lem·ma or neu·ro·lem·ma (nur'ə-lěm'ə, nyur'-)
The delicate membranous covering of a nerve fiber. Also called sheath of Schwann.