DOI Page / Citation link:
https://doi.org/10.11588/diglit.6271#0211
( *#§ )
The ganglions, or knots of nerves, are whitish red bodies,
of various size and figure, somewhat harder than a nerve
found in the course of many of the nerves. They consist of
medullary and fibrous substance : their use is not known.
Nerves receive a covering from the membranes of the
brain, which constitutes their vagina, and are supplied with
arteries and veins from the neighbouring blood-vessels.
When nerves are woven together like a net, they form a
plexus: these are common about the abdominal viscera.
Use. Nerves are the organs of sensation, constituting the
organs of the five external senses,—touch, sight, hearing,
smelling, and taste ; nor can the motion of muscles be per-
formed without the nervous influence.
NERVES OF THE BRAIN.
Under this division, anatomists consider such as proceed
immediately from the brain, arise in pairs, that is, one from
each side of the brain, and are therefore commonly called
after their order, as first, second, third pair of nerves, &c.
And as they are ali subservient to some specifu' purpose, they
have received appropriate appellations, as olfactory, optic,
&c.
OLFACTORY NERVES.
The first pair, or olfactory nerves, arise from the corpora,
striata, in a triangular form; pass forwards, becoming flatter
over the sphaaioid and frontal bones, one to eacl- side of the
crista galli, where they are flattened and enlarged, and send
down a number of branches, which go through the cribriform
The ganglions, or knots of nerves, are whitish red bodies,
of various size and figure, somewhat harder than a nerve
found in the course of many of the nerves. They consist of
medullary and fibrous substance : their use is not known.
Nerves receive a covering from the membranes of the
brain, which constitutes their vagina, and are supplied with
arteries and veins from the neighbouring blood-vessels.
When nerves are woven together like a net, they form a
plexus: these are common about the abdominal viscera.
Use. Nerves are the organs of sensation, constituting the
organs of the five external senses,—touch, sight, hearing,
smelling, and taste ; nor can the motion of muscles be per-
formed without the nervous influence.
NERVES OF THE BRAIN.
Under this division, anatomists consider such as proceed
immediately from the brain, arise in pairs, that is, one from
each side of the brain, and are therefore commonly called
after their order, as first, second, third pair of nerves, &c.
And as they are ali subservient to some specifu' purpose, they
have received appropriate appellations, as olfactory, optic,
&c.
OLFACTORY NERVES.
The first pair, or olfactory nerves, arise from the corpora,
striata, in a triangular form; pass forwards, becoming flatter
over the sphaaioid and frontal bones, one to eacl- side of the
crista galli, where they are flattened and enlarged, and send
down a number of branches, which go through the cribriform