The =deltoid= is undivided; it arises from the aponeurosis covering the
infraspinatus, and it ends largely on the deltoid ridge, but partly on
the fascia of the arm.
The =supraspinatus= is large; it ends chiefly on the external tuberosity
of the humerus.
The =infraspinatus= is inserted into a depression below the posterior
division of the external tuberosity.
The =teres minor= is well developed; it ends on a tubercle between the
external and deltoid tuberosities of the humerus.
The =subscapularis= and =teres major= have no remarkable features.
The =coraco-brachialis= is short and undivided.
The =capsularis= is very small and frequently absent.