Subclavius

• Subclavius:

  • Small triangular muscle, lying between the clavicle and the first rib

  A) Subclavius

  
• O (origin)

  • From a short, thick tendon from the first rib and its cartilage, in front of the costoclavicular ligament

  A) Subclavius

  
• R (direction)

  • Obliquely upward and laterally

  A) Subclavius

  
• I (insertions)

  • Subclavian groove on the under surface of the clavicle

  A) Subclavius

  
• A (actions)

  • Depression of clavicle

  A) Subclavius

  
• NS (nerve supply)

  • Nerve to subclavius (C4 - C6)

  A) Subclavius

  
• Function:

  • Keeps the clavicle stabilised during scapular movements

  A) Subclavius