Subdecks (3)

Cards (19)

  • Deltoid (Anterior, middle and posterior fibres)
    • Coarse, thick, triangular multipennate muscle
    • Anterior, middle and posterior fibres
  • Deltoid - Function:
    • Middle fibres are the main abductor of glenohumeral joint after initiation by supraspinatus
    • Resists downward displacement of humerus
    • All deltoid insert into the deltoid tuberosity on the lateral humeral shaft via a short thick tendon
    • Ant and Pos deltoids have completely opposite actions (Ant = flexor and medial rotator, Pos = extensor and lateral rotator)
    • All deltoid NS = axillary nerve (c5,c6)