The Compleat Surgeon / or, the whole Art of Surgery explain'd in a most familiar Method.

by M. Le Clerc

Tendon to the upper and inner part of the Humerus, a little below the Head.

The greater Pectoral hath its Source in half the Clavicula, on the side of the Sternum; covers the fore-part of the Breast, and is fasten'd by a short, broad, and nervous Tendon, to the top of the Shoulder-Bone, on the inside, between the Biceps and the Deltoides.

The Coracoideus or Coracobrachyæus, beginning in the Apophysis Coracoides of the Omoplata or Shoulder-Blade, adheres to the middle of the Arm on the inside, which with the Pectoral it draws forward.

The Infra-Spinatus fills the Cavity which lies below the Spine of the Omoplata, its Origine being in the lower Rib of the Omoplata, from whence it passeth between the Spine and the Rotundus Minor, to cleave to the Neck of the Shoulder-Bone, which it embraceth, and draws backward.

The Rotundus Minor, or Teres Minor, proceeds from the lower Rib of the Omoplata, and adheres to the Neck of the Shoulder-Bone with the Infra-Spinatus to draw it in like manner backward.

The Sub-scapularis or Immersus is situated entirely under the Omaplata, proceeding from the internal Lip of the Basis or Root of the same Omoplata, and being terminated in the Neck of the Arm-Bone, which it causeth to lie close to the Ribs.

How many Motions are there in the Cubitus or Elbow, and what are its Muscles?

The Cubitus or Ulna is endu'd with two sorts of Motions, viz. that of Flection and that of

Extension, the former being perform'd by the help of two Muscles, that is to say, the Biceps, and the Brachiæus Internus; and the later by eight others, which are the Longus, the Brevis, the Brachiæus Externus, and the Anconeus.

The Biceps is a Muscle with two Heads, one whereof proceeds from the Apophysis Coracoides, and the other from the Cartilaginous edge of the Glenoid Cavity of the Omoplata or Shoulder-Blade: These two Heads descend along the fore-part of the Arm, and are united in one and the same Body, from whence springs forth a Ligament, which is inserted in a tuberosity situated in the upper and fore-part of the Radius.