Teres major is only functional when the Rhomboids fix the scapula. This muscle mainly helps Latissimus dorsi

Origin

  • lower 1/3 of the lateral border of the scapula

Insertion

  • Intertubercular groove (between the greater and lesser tubercles) of the humerus

Actions

  • Adduction
  • Internal rotation
  • Extension

Shoulder Joint Muscles:

Innervation

  • Lower scapular nerve

Daily uses

  • Tucking the back of your shirt into your trousers

How can I stretch it?

How can I strengthen it?

  • Internal rotation with a dumbbell

More Human Muscles: