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62 Cards in this Set
- Front
- Back
Origin of trapezius
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spinous processes of C7 - T12, nuchal ligament, external occipital protuberance, medial 1/3 of superior nuchal line
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Insertion of trapezius
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Spine of scapula, acromion process of scapula, lateral 1/3 of the clavicle
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Innervation of trapezius
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Accessory nerve (XI) and cervical spinal nerves C3 and C4
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Blood supply of trapezius
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Transverse cervical artery
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Action of trapezius
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elevates, retracts, and rotates scapula
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Origin of latissimus dorsi
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spinous processes of T6 - T12, thoracolumbar fascia, iliac crest, inferior 2 - 4 ribs
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Insertion of latissimus dorsi
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Intertubercular sulcus of the humerus
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Innervation of latissimus dorsi
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thoracodorsal nerve
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Blood supply of latissimus dorsi
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thoracodorsal artery
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Action of latissimus dorsi
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extends, adducts, medially rotates the humerus
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Origin of Rhomboid minor
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spinous processes of C7 - T1, nuchal ligament
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Insertion of Rhomboid minor
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medial border of scapula above spine
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Blood supply of Rhomboid minor and major
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Dorsal scapular artery
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Innervation of Rhomboid minor and major
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Dorsal scapular nerve
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Action of Rhomboid minor and major
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Retract scapula and rotate glenoid cavity inferiorly
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Origin of Rhomboid major
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spinous processes of T2 - T5
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Insertion of Rhomboid major
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medial border of scapula below spine
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Origin of erector spinae
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Thoracolumbar fascia
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Insertion of erector spinae
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Thoracic and cervical vertebrae, numerous ribs
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Innervation of erector spinae
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Dorsal rami of spinal nerve (UNIQUE - usually sensory)
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Action of erector spinae
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Rotary movements of the spine, some extension
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Origin of serratus posterior superior
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spinous processes of C7 - T3, nuchal ligament
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Insertion of serratus posterior superior
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Ribs 2 - 4
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Innervation of serratus posterior superior
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Intercostal nerve
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Action of serratus posterior superior
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elevates ribs, accessory respiratory muscle
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Origin of serratus posterior inferior
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thoracolumbar fascia, spinous processes of T11 - L2
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Insertion of serratus posterior inferior
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Ribs 9 - 12
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Innervation of serratus posterior inferior
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Intercostal nerve
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Action of serratus posterior inferior
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Depresses ribs, prevents diaphragm from pulling superiorly
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Origin of deltoid
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Lateral 1/3 of clavicle, spine of scapula, acromion of scapula
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Insertion of deltoid
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Deltoid tuberosity of humerus
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Innervation of deltoid
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Axillary nerve
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Action of deltoid
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Abducts arm 15 - 100 degrees, anterior fibers flex and medially rotate the arm, posterior fibers extend arm and laterally rotate the arm
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Origin of supraspinatus
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supraspinous fossa
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Insertion of supraspinatus
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Superior facet of the greater tubercle of the humerus
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Innervation of supraspinatus
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suprascapular nerve
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Action of supraspinatus
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Initiates abduction of arm 0 - 15 degrees
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Origin of infraspinatus
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infraspinous fossa
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Insertion of infraspinatus
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Middle facet of the greater tubercle
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Innervation of infraspinatus
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Suprascapular nerve
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Action of infraspinatus
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Lateral rotation of arm
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Origin of teres minor
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Upper lateral border of the scapula
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Insertion of teres minor
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Inferior facet of the greater tubercle of the humerus
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Innervation of teres minor
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Axillary nerve
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Origin of teres major
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Lower lateral border of the scapula
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Insertion of teres major
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Crest of the lesser tubercle of the humerus
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Innervation of teres major
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Lower subscapular nerve
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Action of teres major
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Medial rotation of the humerus, adduction of the arm, extension of the arm
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Origin of subscapularis
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subscapular fossa
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Insertion of subscapularis
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Lesser tubercle of the humerus
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Innervation of subscapularis
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Upper and lower subscapular nerve
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Action of subscapularis
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Medial rotation of the arm
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Origin of pectoralis major
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Sternum, clavicle, ribs 1 - 6
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Insertion of pectoralis major
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Crest of the greater tubercle of the humerus
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Innervation of pectoralis major
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Medial and lateral pectoral nerves
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Action of pectoralis major
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medial rotation, adduction, flexion of arm
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Muscles Elevating the Scapula
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Levator scapulae, superior trapezius
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Muscles Depressing the Scapula
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Lower serratus anterior, lower trapezius
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Muscles Protracting the Scapula
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Serratus anterior, pectoralis minor
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Muscles Retracting the Scapula
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Middle trapezius, rhomboid major, rhomboid minor
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Muscles Superiorly Rotating the Glenoid Fossa
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Upper and lower trapezius, serratus anterior
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Inferior Rotation of the Glenoid Fossa
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Levator scapulae, rhomboid minor and rhomboid major
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