(seq. 141)

66

Lect. 5.

much as Blood Vessels do, & where an Artery & Vein
go off. a Nerve generally attends - A Nerve being a bundle
of smaller Nerves, is no more than a large Bundle, vending
off a Part of those, of which it is composed, ^{each small constituent Fibrilla is distinct from its Origin in the Brain to its [Termination?]} When two Bundles
of Nerves join & make up one, this is called a Communication
& their frequent Union or Anastomosing is called a Plexus,
which sometimes amongst the larger, but most frequently
among the small; these Plexuses are not to be separated, bec=
ause the small constituent Nerves become so much blen=
ded & entangled. The Anastomosing of Nerves does not answer
the same Purpose, as that of Arteries. The Nerves not being
Tubular. Their Anastomosing is only the Meeting or Decus=
sation of the Plexus; so that Sensation would not be conti=
nued by this Means, to a Part, where a Nerve was cut out
as Nourishment are conveyed to parts, where Arteries are
cut. Arteries & Veins go to the Viscera nearly the same Way
as to other Parts, but the Nerves are dispersed after the Man=
ner of a Plexus upon the Liver, Lungs, Kidneys &c & each Ple=
xus has its Name from the Part, to which it goes, as the Sple=
nic, Cardiac &c & where the large Trunkes meet to form a Plex=
us, the Filaments decussate each other; this makes it so
difficult to dissect them, & moreover we have not any tolerable
good Figures of them - There is no Instance of a large Nerve
going to any one Viscus ^only (of natural Ganglions) There are