The seventh is the Auditive Nerve, that enters into the Os Petrosum, where it divides it self into many Branches, which when gone forth, are distributed to the Muscles of the Tongue, Lips, Mouth, Face, Fore-head, Eye-Lids, &c.
The eighth is the Os Vagum, or wandering Pair, which is united to the Intercostal Nerve, as also to the Recurrent, Diaphragmatick, Mesenterick, &c.
The ninth Pair, after having form'd a Trunk with the eighth, disperseth its Twigs several ways, whereof one is join'd with the Twig to the tenth, to be distributed together into the Muscle Sternohyoideus, and into the Tongue.
The Intercostal and Spinal are not Pairs of Nerves, but only Branches or Twigs of other Pairs.
What is the Distribution and Use of the thirty Pairs of Nerves that proceed from the Spinal Marrow?
There are seven that go forth from the several Vertebra's of the Neck, twelve from those of the Back, five from the Loins, and six from the Os Sacrum, according to the following Progression.
The first of the seven Pairs of Nerves of the Neck proceeds from between the Occipital Bone and the first Vertebra, nam'd Atlas, its Fibres being lost in the Muscles of the hinder-part of the Head and Neck.
The second Pair springs from between the first and second Vertebra of the Neck; the Fibres whereof are lost in the Muscles of the Head, and in the Skin of the Face.
The third Pair issueth from between the second and third Vertebra of the Neck; and its Fibres are lost in the Flexor Muscles and Extensors of the Neck.