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Muscles and Nerves of the Scapular Region: Anatomy Overview

This overview delves into the anatomy and functionality of key muscles and nerves in the scapular region, detailing their roles in scapular motion, stabilization, and arm movement. Highlighted are the levator scapulae, rhomboids, and subscapularis muscles, along with their innervation from spinal nerves C5 to T1. The text emphasizes muscle actions such as retraction, elevation, and rotation of the scapula, and arm flexion and adduction, providing a comprehensive look at upper limb mechanics critical for movement and stability.

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Muscles and Nerves of the Scapular Region: Anatomy Overview

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  1. Third week of March 2014

  2. Dorsalscapular Levator scapulae, Rhomboid major, Rhomboid minor retract and rotate the scapula, depressing its glenoid cavity C5 SPINAL NERVE elevate the scapula, or fix it BicepsbrachiiFLEX, SUP BrachialisFLEX CoracobrachialisFLEX,ADD ARM Dorsalramus Suprascapular Nervetosubclavius VENTRAL RAMUS SupraspinatusABD InfraspinatusLatR Anchors and depresses clavicle Subclavius Musculocutaneous Longthoracic ANT. DIVISION Lateralpectoral SUPERIOR TRUNK Serratus ant. C6 SPINAL NERVE Pectoralismajor Dorsalramus ADD,FLEX,MedR VENTRAL RAMUS LATERAL CORD ANT. DIVISION Protracts scapula and holds it against thoracic wall; rotates scapula M E D I A N Lat.rootof mediannerve Axillary C7 SPINAL NERVE Sup. subscapular RADIAL Dorsalramus MIDDLE TRUNK ABD Subscapularis Deltoid Teres minor VENTRAL RAMUS MedR LatR ALL THE POST. DIVISIONS POSTERIOR CORD C8 SPINAL NERVE Thoracodorsal Med.root of mediannerve Dorsalramus Inf. subscapular Latissimusdorsi Subscapularis Teres major MedR ADD,EXT,MedR VENTRAL RAMUS ADD, MedR ANT. DIVISION INFERIOR TRUNK MEDIAL CORD T1 SPINAL NERVE Dorsalramus VENTRAL RAMUS Medialpectoral ULNAR ADD,FLEX,MedR Pectoralismajor Pectoralisminor Medialcutaneousnerve of arm Medialcutaneousnerve of forearm Stabilizes scapula against thoracic wall

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