Back muscles Flashcards
Trapezius Proximal Attachments
Superior nuchal line, external occipital protruberance, nuchal ligament, spinous processes C7-T12
Trapezius Distal Attachments
Clavicle, acromion, scapular spine
Trapezius Actions
Elevation, retraction, depression of scapula; rotation of glenoid fossa superiorly
Trapezius Innervation
Cranial nerve XI (spinal accessory nerve)
Trapezius Blood Supply
Transverse Cervical Artery
Latissimus Dorsi Proximal Attachments
Spinous processes T7-12, thoracolumbar fascia, iliac crest
Latissimus Dorsi Distal Attachments
Floor of intertubercular sulcus of humerus
Latissimus Dorsi Actions
Extension, adduction, medial/internal rotation of humerus; lifts body toward arm in climbing
Latissimus Dorsi Innervation
thoracodorsal nerve
Latissimus Dorsi Blood Supply
thoracodorsal artery
Levator Scapulae Proximal Attachments
Transverse processes, C1-4
Levator Scapulae Distal Attachments
Superior angle of scapula
Levator Scapulae Innervation
Dorsal scapular nerve (C5)
Levator Scapulae Blood Supply
Dorsal scapular artery
Rhomboid Major Proximal Attachments
spinous processes of T2-T5
Rhomboid Major Distal Attachments
Medial border of scapula , below scapular spine
Rhomboid minor proximal attachments
nuchal ligament, spinous processes of C7, T1
Rhomboid minor distal attachments
Medial border of scapula, superior to scapular spine
Serratus posterior superior
Elevation of ribs
Serratus posterior inferior
Depression of ribs
Splenius capitus origin
Lower cervical and upper thoracic spinous processes
Splenius Cervicis origin
Lower cervical and upper thoracic spinous processes
Capitus insertion
Mastoid process, superior nuchal line