PECTORAL REGION
AND
SHOULDER
Pectoral Region/Shoulder – Surface Anatomy
Pectoral Muscles
Pectoralis major-
Pectoralis minor- attached to ribs 3,4, 5.
Attaches to the coricoid process of the scapula.
Norm. moves scapula, can elevate the ribs.
Subclavius-under clavicle, attached to first rib.
Helps fixate clavicle.
Shoulder joint is attached to the humerus, mostly
By muscle.
Strong joint…..only place the appendicular
Skeleton attached to the axial skeleton…???
Note limited bony attachment of
upper limb to axial skeleton.
Breast Anatomy
BLOOD SUPPLY TO BREAST
Pectoral Region - Fascia
Clavipectoral fascia – surround
subclavius/pectoralis minor
1. Costocoracoid membrane –
upper segment (named for
med/lat attachments)
* pierced by 3 structures:
- Cephalic v.
- Thoracoacromial a.
- Lateral Pectoral n.
2. Suspensory Ligament of Axilla –
lower segment – fuses with axillary
fascia at axillary floor
Shoulder Muscles - Deltoid
Shoulder Muscles – Rotator Cuff
S
I
T
S
Posterior Shoulder Muscles & Spaces
Teres Major
Triceps brachii, long head
Quadrangular space
Triangular space
Triangular interval
Army Over – Navy Under= Artery over, vein underneath
Shoulder Muscles – Serratus Anterior
Shoulder Muscles – Serratus Anterior
Note location of nerve.
Subdeltoid (subacromial) Bursa
“Shoulder Separation”
Shoulder Dislocation
Scapular Anastomosis
Scapular Anastomosis