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Teres Major

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 goove (between the greater and lesser tubercles) of the humerus

Actions

• Adduction
• Internal rotation
• Extension

Innervation

• Lower subscapular nerve

Daily uses

• Tucking the back of your shirt into your trousers

How can I stretch it?

• External rotation stretch

How can I strengthen it?

• Internal rotation with a dumbbell