L&B Wk 1 - Superficial muscles of the Back

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Flashcards on L&B Wk 1 - Superficial muscles of the Back, created by Emma Watt on 10/01/2018.
Emma Watt
Flashcards by Emma Watt, updated more than 1 year ago
Emma Watt
Created by Emma Watt about 6 years ago
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Question Answer
Attachments of the Trapezius originates from skull, ligamentum nuchae & spinous processes of C7- T12. attaches to the Clavicle, Acromion & Spine of scapula
Innervation of the Trapezius motor innervation is from the accessory nerve. also receives proprioreceptors from C3 and C4 spinal nerves
Action of the Trapezius Upper fibres elevate the Scapula & rotate it during adduction of the arm, middle fibres retract the scapula, lower fibres pull scapula inferiorly
Attachements of Latissimus Dorsi origin: broad, arising from the spinous processes of T6-T12, iliac crest, thoracolumbar fascia and the inferior 3 ribs. fibres converge into a tendon that attaches to the intertubercular sulcus of the humerus
Innervation of the Latissimus Dorsi thoracodorsal nerve
action of the Latissimus Dorsi Extends, adducts and medially rotates the arm.
Attachments of Levator Scapulae originates from the transverse processes of the C1-C4 vertebrae and attaches to the medial border of the scapula
Innervation of the Levator Scapulae dorsal scapular nerve
Action of the Levator Scapulae elevates the scapula
Attacments of the Rhomboid Major originates from the spinous processes of the T2-T5 vertebrae. attaches to the medial border of the scapula - between the scapular spine and inferior angle
innervation of the Rhomboid Major dorsal scapular nerve
action of the Rhomboid Major retracts and rotates the scapula
attachments of the Rhomboid Minor oroginates from the spinous processes of C7 - T1 vertebrae. attaches to the medial border of the scapula- at the level of the scapular spine
innervation of the Rhomboid Minor dorsal scapular nerve
action of the Rhomboid Minor retracts and rotates the scapula
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