Anterior view,
right side (photo credit -
Paula Stacey, Fall 2008)
Anterior view,
right side (photo credit -
Paula Stacey, Fall 2008)
Anterior view, right side
Anterior (deep) view of origin, right side
Anterior view of insertion, right sideHuman information:
subscapularis (rotator cuff)
origin: entire anterior surface of
the
subscapular fossa
of scapula
insertion: lesser tubercle of humerus,
and capsule of shoulder joint
nerve: upper and lower subscapular
nerves (C5, C6)
action: medial (internal) rotation of
arm
This is one of the four rotator cuff muscles. It is the only rotator cuff muscle that medially rotates the arm. There are four other medial rotators of the arm, but these are found under moves the arm. The above drawings of the origin and insertion might help visualize this information (red is the origin, blue the insertion).
COPYRIGHT
2008 by William C. Johnson II
ALL RIGHTS RESERVED!
