Brachial Plexus - List of Structures

Osteology

• • Cervical vertebrae

    • Transverse foramina

  • 1st rib

    • Scalene tubercle

    • Groove for subclavian v.

    • Groove for subclavian a.

  • 2nd rib

  • Superior thoracic aperture (Thoracic inlet)

Nerves

• • Phrenic n.

  • Brachial plexus

    • Roots (C5-T1)

      • Dorsal scapular n. (C5)

      • Long thoracic n. (C5,6,7)

    • Trunks

      • Superior trunk

        • Suprascapular n. (C5,6)

      • Middle trunk

      • Inferior trunk

    • Divisions

    • Cords

      • Medial cord

        • Ulnar n. (C7,8,T1)

        • Contribution to median n.

      • Lateral cord

        • Musculocutaneous n. (C5,6,7)

        • Contribution to median n.

      • Median n. (C6,7,8,T1)

      • Posterior cord

        • Axillary n. (C5,6)

        • Radial n. (C5,6,7,8,T1)

Veins

• • Subclavian v.

Arteries

• • Subclavian a.

    • 1st part

      • Vertebral a.

      • Thyrocervical trunk

        • Inferior thyroid a.

        • Ascending cervical a.

        • Transverse cervical a.

        • Suprascapular a.

      • Internal thoracic a.

    • 2nd part

      • Costocervical trunk

    • 3rd part

      • Dorsal scapular a.

  • Axillary a.

Muscles

• • Anterior scalene m.

  • Middle scalene m.

  • Posterior scalene m.

Clinical Terms

• Erb-Duchenne palsy

• Klumpke's palsy

• Radial nerve ("Saturday night") palsy

• Ulnar nerve palsy