MOINA of Muscles Connecting the Upper Limb to the Vertebral Column

Question 1

trapezius

Answer 1

origin: occipital bone, ligamentum nuchae, spine of seventh cervical vertebra and all thoracic vertebrae
insertion: upper fibers into lateral third of clavicle; middle and posterior fibers into acromion and spine

nerve: spinal part of accessory nerve (motor) and C3 and 4 (sensory)

upper fibers elevate the scapula; middle fibers pull scapula medially; lower fibers pull medial border of scapula downward

Question 2

latissimus dorsi

Answer 2

origin: iliac crest, lumbar fascia, spines of lower six thoracic vertebrae, lower three or four ribs, and inferior angle of scapula
insertion: floor of bicipital groove of humerus

nerve: thoracodorsal nerve

extends, adducts, and medially rotates the arm (ExAdIr); “Swimmer’s Muscle”

Question 3

levator scapulae

Answer 3

origin: transverse processes of first four cervical vertebrae
insertion: medial border of scapula

nerve: C3 and 4 and dorsal scapular nerve

raises medial border of scapula

Question 4

rhomboid minor

Answer 4

origin: ligamentum nuchae and spines of seventh cervical and first thoracic vertebrae
insertion: medial border of scapula

nerve: dorsal scapular nerve

raises border of scapula upward and medially

Question 5

rhomboid major

Answer 5

origin: second and fifth thoracic spines
insertion: medial border of scapula

nerve: dorsal scapular nerve

raises border of scapula upward and medially