It hath seven, the first whereof is the Oesophagieus, which takes its rise from the side of the Scutiformis or Buckler-like Cartilage, and passing behind the Oesophagus or Gullet, is fasten'd to the other side of the Cartilage. It thrusts the Meat down by locking up the Pharynx as a Sphincter.
The second named Stylopharingæus, springs from within the Acute Apophysis of the Os Sphenoides, or Cuneiforme, and is inserted obliquely
in the side of the Pharynx, which it dilates by drawing it upward.
The third, call'd Sphenopharyngæus, proceeds from the Apophysis Styliformis, and is terminated in the side of the Pharynx, which it dilates by drawing its sides.
The fourth Pair is the Cephalopharyngæus which ariseth from the articulation of the Head with the first Vertebra, and closeth the Larynx.
How many Muscles are there in the Neck, and which be they?
There are four Muscles in the Neck on each side, viz. two Flexors, and two Extensors. The Flexors are the Scalenus and the Rectus or Longus; and the Extenders are the Spinatus and the Transversalis.
The Scalenus or Triangularis hath two remote Sources, viz. one in the first Rib, and the other in the Clavicle, and is fasten'd to the third and fourth Vertebra of the Neck.
The Rectus or Longus begins in the side of the four upper Vertebra's of the Back, and is join'd to the upper Vertebra's of the Neck, and the hinder part of the Head.
The Spinatus hath its Origine in the fourth and fifth upper Vertebra's of the Back, and is fasten'd to all the six lower Vertebra's of the Neck.