PLATE 8.
A. Clavicular attachment of the sterno-mastoid muscle lying over the internal jugular vein, &c.
B. Subclavian artery in the third part of its course.
C. Vein formed by the union of external jugular, scapular, and other veins.
D. Scalenus anticus muscle stretching over the artery, and separating it from the internal jugular vein.
E. Post-half of omo-hyoid muscle.
F. Inner branches of the brachial plexus of nerves.
G. Clavicular portion of trapezius muscle.
H. Transversalis colli artery.
I. Layer of the cervical fascia, which invests the sterno-mastoid and trapezius muscles.