H. Temporo-maxillary artery.
I. Occipital artery crossing the internal carotid artery and jugular vein.
K. Internal jugular vein crossed by some branches of the cervical plexus, which join the descendens noni nerve.
L. Spinal accessory nerve, which pierces the sterno-mastoid muscle, to be distributed to it and the trapezius.
M.Cervical plexus of nerves giving off the phrenic nerve to descend the neck on the outer side of the internal jugular vein and over the scalenus muscle.
N. Vagus nerve between the carotid artery and internal jugular vein.
O. Ninth or hypoglossal nerve distributed to the muscles of the tongue.
P P. Branches of the brachial plexus of nerves.
Q. Subclavian artery in connexion with the brachial plexus of nerves.
R R. Post scapular artery passing through the brachial plexus.