GA Lab Practical 1 Flashcards
Trapezius M.
Attachments
Medial: Superior nuchal line, external occipital protuberance, ligamentum nuchal, spinous process C7-T12
Distal: Lateral 1/3 of the clavicle, acromion, spine of scapula
Trapezius
Action
Upper: Rotates, elevates
Middle: retracts
Lower: depresses scapula
Trapezius
Innervation
Motor: Spinal accessory n.
Proprioception: C3-4
Levator Scapulae M.
Attachments
Medial: Transverse Process C1-C4
Distal: Superior angle of scapula
Levator Scapulae M.
Innervation
Dorsal scapular n.
Latissimus Dorsi M.
Attachments
Medial: Spinous process T7-L5, thoracolumbar fascia, sacrum, iliac crest, ribs 10-12
Lateral: Floor of intertubercular sulcus of humerus/bicipital groove
Latissimus Dorsi
Action
Extends, adduct, and medially rotates humerus (IR)
Latissimus Dorsi M.
Innervation
Thoracodorsal n.
Levator Scapulae M.
Action
Elevates and rotates scapula inferiorly
Rhomboid Major M.
Attachments
Medial: Spinous process T2-T5
Lateral: Medial boarder of scapular below spine
Rhomboid Major M.
Action
Retracts and inferiorly rotates scapula
Rhomboid Major M.
Innervation
Dorsal scapular n.
Rhomboid Minor M.
Attachment
Medial: Ligamentum nuchae, spinous process C7-T1
Lateral: Medial border of scapula at spine
Rhomboid Minor M.
Action
Retracts and inferiorly rotates scapula
Rhomboid Minor M.
Innervation
Dorsal scapular n.
Serratus Posterior Superior M.
Attachments
Medial: Spinous process C7-T3
Distal: Superior border of ribs 2-5, lateral to their angels
Serratus Posterior Superior M.
Action
Elevates ribs 2-5
Serratus Posterior Inferior M.
Attachments
Medial: Spinous process T11-L2
Lateral: Inferior border of robs 9-12, lateral to their angles
Serratus Posterior Inferior M.
Action
Depresses ribs 9-12
Serratus Anterior M.
Attachments
Medial: Anterior surface of the medial border of the scapula
Lateral: Ribs 1-9 lateral parts