Anatomy-Lexicon

Small round muscle

Synonyms

Latin: M.. teres minor

Latin: Teres minor muscle
English: teres minor muscle

Synergists: M. infraspinatus
Antagonists: M. subscapularis, M. pectoralis major, M. latissimus dorsi

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introduction

The small round muscle (Musculus teres minor) is an elongated, square muscle and runs over the rear part of the shoulder joint capsule.

You can find more detailed information on the subject of back here:

Back pain
Back school
Spine

definition

The small round muscle is part of the posterior (so-called. dorsal) Shoulder muscles. It has a close connection to the lower bone muscle (M. infraspinatus) and is partially covered by the delta-shaped muscle.
As part of the rotator cuff, it ensures the stability of the shoulder joint together with the infraspinatus, subscapularis and supraspinatus muscles. The shoulder joint is the joint of the body that has the greatest mobility and at the same time is relatively poorly secured by ligaments.

Insertion / origin / innervation

Approach: Lower facet of the large humeral cusp (Tuberculum majus humeri)

Origin: External surface of the lateral margin of the shoulder blade (Margo laterlis scapulae)

Innervation: Axillary nerve, C 5-6

How is the muscle trained / contracted?

The muscle is contracted when a weight is drawn against the body. The best ways to train the small round muscles are therefore:

Lat pull
Back insulator

You can find detailed information under back training

function

The function of the small round muscle consists mainly of adduction (lateral approach of the arm to the body), external rotation and retroversion (extension of the arm behind the body). In addition, the small round muscle and the large round muscle form the boundaries of the medial and lateral axillary gaps.

You can find information on all forms of movement here in one Overview of forms of movement