Download Posterior triangle of the neck

Posterior triangle of the neck
Objectives:
1. To become familiar with the surface anatomy of the posterior triangle of
the neck.
2. To study the cutaneous branches of the cervical plexus that emerge from
the posterior triangle and the cutaneous vessels of this region.
3. To become familiar with the boundaries of the posterior triangle of the
neck, its roof, contents, and floor.
4. To become familiar with the proximal portions of the brachial plexus and
the subclavian vessels.
5. To understand how the brachial plexus and subclavian vessels travel from
the posterior triangle of the neck into the axilla.
Cutaneous vessels:
external jugular vein
begins
ends
Cutaneous peripheral nerves:
lesser occipital nerve
from
to
great auricular nerve
from
to
transverse cervical nerve
from
to
supraclavicular nerves (medial, intermediate, lateral)
from
to
Deep fascia:
investing layer of deep cervical fascia
Posterior triangle:
boundaries
subdivisions
roof
floor
contents
Muscle of the superficial fascia of the pectoral region:
platysma
O:
I:
A:
n:
a: facial artery
Muscle that divides the neck into anterior and posterior triangles:
sternocleidomastoid
O:
I:
A:
n:
a: occipital artery
muscles of floor of posterior triangle:
splenius capitis (already studied)
levator scapulae (already studied)
posterior scalene
O:
I:
A:
n:
a: ascending cervical branch of inferior thyroid artery
middle scalene
O:
I:
A:
n:
a: ascending cervical branch of inferior thyroid artery
anterior scalene
O:
I:
A:
n:
a: ascending cervical branch of inferior thyroid artery