The Rhomboides is situated over the Trapezius, its rise being in the Apophyses of the three lower Vertebra's of the Neck, and of the three upper of the Back, but it is afterward join'd to the whole Basis or Root of the Omoplata, which it draws backward.
The proper Levator commenceth in the Transverse Apophyses of the four first Vertebra's of the Neck, by different Progressions, but is afterward re-united, and inserted in the upper Corner of the Omoplata, which it draws upward.
The lesser Pectoral, or Serratus Minor Anticus, is situated under the great Pectoral, its rise being by Digitation or Indenting in the second, third, and fourth of the upper Ribs, and its Insertion in the Apophysis Coracoides of the Shoulder-Blade, which it draws forward.
How many Motions are there in the Humerus, or Arm; which be they, and what are its Muscles?
The Arm performs all sorts of Motions by the help of nine Muscles: For it is lifted up by the Deltoides and the Infra-Spinatus; it is depress'd by the Largissimus, and the Rotundus Major; it is drawn forward by the Pectoralis Major, and the Coracoideus; it is drawn backward by the Infra-Spinatus, and the Rotundus Minor. It is drawn near the Ribs by the Subscapularis, and its circular Motion is performed when all these Muscles act together successively.
The Deltoides or Triangular hath its beginning in the whole Spine of the Omoplata, the Acromion, and half the Clavicula, and by its point cleaves with a strong Tendon to the middle of the Arm.
The Infra-Spinatus takes its rise in the Cavity that lies above the Spine of the Omoplata, which it fills, passing over the Acromion, until it is join'd to the Neck of the Shoulder-Bone, which it surrounds with a large Tendon.
The Largissimus, otherwise call'd Ani-scalptor, covers almost the whole Back, proceeding from a large and Nervous Stock, in the third and fourth lower Vertebra of the Back, the five Vertebra's of the Loins, the Spine of the Os Sacrum, the hinder part of the Lip of the Hip-Bone, and the external part of the lower Bastard-Ribs, in passing from whence it insinuates it self into the lower Corner of the Omoplata, as also into the upper and inner part of the Humerus.
The Rotundus Major, or Teres Major, having its Origin in the external Cavity of the lower Corner of the Omoplata, is confounded with the Largissimus, and adheres with it by the same