Superficial Back Flashcards
Upper trapezius origin
External occipital protuberance, Ligamentum nuchae, spinal processes of C7 and all thoracic vertebrae
Upper trapezius insertion
Spine of scapula; acromion; lateral third of clavicle
Upper trapezius action
Elevation of scapula (shrug)
Upper trapezius innervation
Spinal accessory nerve (CNXI)
Upper trapezius blood supply
Transverse cervical artery, dorsal perforating branches of posterior intercostal arteries
Middle trapezius origin
External occipital protuberance; Ligamentum nuchae; spinous process of C7 T1-T12
Middle trapezius insertion
Spine of scapula; acromion; lateral third of clavicle
Middle trapezius action
Retraction of scapula
Middle trapezius innervation
Spinal accessory nerve (CNXI)
Middle trapezius blood supply
Transverse cervical artery, dorsal perforating branches of posterior intercostal arteries
Lower trapezius origin
External occipital protuberance; Ligamentum nuchae; spinous process of C7 T1-T12
Lower trapezius insertion
Spine of scapula; acromion; lateral third of clavicle
Lower trapezius action
Depression of scapula
Lower trapezius innervation
Spinal accessory nerve (CNXI)
Lower trapezius blood supply
Transverse cervical artery, dorsal perforating branches of posterior intercostal arteries
Rhomboid major origin
Spinous process T2-T5
Rhomboid major insertion
Medial border of scapula below rhomboid minor
Rhomboid major action
Elevation & retraction of scapula
Rhomboid major innervation
Dorsal scapular nerve
Rhomboid major blood supply
Dorsal scapular artery
Rhomboid minor origin
Lower part of Ligamentum nuchae; spinous process of C7 and T1
Rhomboid minor insertion
Medial lip of scapular at base of spine
Rhomboid minor action
Elevation and retraction of scapula
Rhomboid minor innervation
Dorsal scapular nerve
Rhomboid minor blood supply
Dorsal scapular artery
Levator scapulae origin
Transverse processes of C1-C4
Levator scapulae insertion
Superior angle and upper part of medial border of scapula
Levator scapulae action
Elevation of scapula, rotation of glenoid cavity downward
Levator scapulae innervation
Dorsal scapular nerve
Levator scapulae blood supply
Dorsal scapular artery
Latissimus dorsi orgin
Spinous process of T6-T12 and sacral vertebrae; posterior part of iliac crest
Latissimus dorsi insertion
Medial lip intertubercular groove of humerus
Latissimus dorsi action
Extension, adduction, medial rotation of arm
Latissimus dorsi innervation
Thoraco-dorsal nerve
Latissimus dorsi blood supply
Thoracodorsal artery
Pectoralis major clavicular head origin
Medial two thirds of clavicle
Pectoralis major sternal head origin
Sternum & costal cartilage 1-6
Pectoralis major clavicular & sternal head insertion
Lateral lip of intertubercular groove of humerus
Pectoralis major clavicular head action
Adduction and medial rotation & flexion of arm
Pectoralis major sternal head action
Adduction and medial rotation of arm
Pectoralis major clavicular & sternal head innervation
Medial and lateral pectoral nerves
Pectoralis major clavicular & sternal head blood supply
Pectoral branch of thoracoacromial artery
Pectoralis minor origin
Ribs 3-5
Pectoralis minor insertion
Corocoid process
Pectoralis minor action
Depression of shoulder; downward rotation of scapula
Pectoralis minor innervation
Medial pectoral nerve
Pectoralis minor blood supply
Pectoral branch of Thoraco-acromion and intercostal lateral thoracic arteries
Serratus anterior origin
Ribs 1-8 on anterolateral thoracic wall
Serratus anterior insertion
Medial border of scapula; inferior angle
Serratus anterior action
Protraction of the scapula; holds medial border against thoracic wall
Serratus anterior innervation
Long thoracic nerve
Serratus anterior blood supply
Lateral thoracic artery
Subclavius origin
1st rib
Subclavius insertion
Inferior surface of clavicle
Subclavius action
Stabilizes Sternoclavicular joint
Subclavius innervation
Nerve to Subclavius
Subclavius blood supply
Thoracoacromial & suprascapular arteries