ANATOMY-UB-BACK-MUSCLES-TRAPS-RHOMBOIDS-LEVATOR SCAPULAE


ANATOMY – MUSCLES – TRAPS | RHOMBOIDS | LEVATOR SCAPULAE


TRAPEZIUS


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source: Physiopedia .


  1. Upper Descending part: elevates pectoral girdle[1]
  2. Middle part: retracts scapula[1]
  3. Lower Ascending part: depresses shoulders[1]
  4. Upper Descending and Lower Ascending together: rotates scapula upwards[1]
  5. Bilateral contraction: extends neck[4]
  6. Unilateral contraction:
    • Ipsilateral side flexion of neck[4]
    • Middle part: assists with ipsilateral side flexion and contralateral axial rotation of upper thoracic region[4]

RHOMBOIDS


1


  • Scapular Retraction
  • Scapular Elevation
  • Scapular Rotation Inferiorly to Depress Glenoid Cavity
  • Assist Serratus Anterior to Fix Scapula to Thoracic Wall and Fix Scapula during movements of the upper limb

LEVATOR SCAPULAE


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  • Elevates Scapula & Tilts the glenoid cavity inferiorly by rotating the scapula downward. [6]
  • If the scapula is fixed, a contraction of the levator scapulae leads to the lateral flexion of the cervical vertebral column to the side and stabilizes the vertebral column during rotation.

YOUTUBE VIDEOS


  1. 18 MUSCLES OF THE SPINE – Start at 10:50 – ABELSON – CHIRO – 2017
  2. LARGE SHOULDER MUSCLES .
    – TRAPS 6:15 | LATS 9:15 | RHOMBOIDS 17:30 | LEVATOR SCAPULAE 18:30 | TERES MAJOR 20:20 – SAM WEBSTER – 2017
  3. EXTRINSIC MUSCLES – ANATOMY ZONE – 2011
  4. SCAPULOTHORACIC JOINT – MUSCLES & NERVES – NOTED ANATOMIST – 2015
  5. SUPERFICIAL BACK MUSCLES – NOTED ANATOMIST – 2015





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