Scapula

Question 1

Upper Trapezius

Answer 1

O: external occipital protuberance; ligamentum nuchae; spinous process C7 -T12
I: spine of scapula; acromion; lateral third of clavicle
A: elevate scapula
N: spinal acessory nerve (CN XI)

Question 2

Serratus Anterior

Answer 2

O: ribs 1-8 on anterolateral thoracic wall
I: medial border of scapula; inferior angle
A: protraction of scapula; holds medial border against thoracic wall
N: long thoracic nerve

Question 3

Pectoralis Minor

Answer 3

O: ribs 3-5
I: coracoid process of scapula
A: depression of shoulder; downward rotation of scapula
N: medial pectoral nerve

Question 4

Lower Trapezius

Answer 4

O: external occipital protuberance; ligamentum nuchae; spinous process C7 -T12
I: spine of scapula; acromion; lateral third of clavicle
A: depression of scapula
N: spinal accessory nerve (CN XI)

Question 5

Latissimus Dorsi

Answer 5

O: Spinous process of lower six thoracic and all lumbar and sacral vertebrae; posterior part of iliac crest
I: Medial lip (crest of lesser tubercle) and floor at intertubercular groove of humerus
A: Extension, adduction, and medial rotation of arm
N: thoracodorsal nerve

Question 6

Pectoralis Major (Sternal Head)

Answer 6

O: the costal cartilages of ribs 1-6
I: lateral lip of intertubercular groove of humerus
A: adduction and medial rotation of arm
N: medial and lateral pectoral nerves

Question 7

Middle Trapezius

Answer 7

O: external occipital protuberance; ligamentum nuchae; spinous process C7 -T12
I: spine of scapula; acromion; lateral third of clavicle
A: retraction of scapula
N: spinal accessory nerve (CN XI)

Question 8

Rhomboid Major

Answer 8

O: spinous process of T2-T5
I: medial border of scapula below rhomboid minor
A: elevation and retraction of scapula
N: dorsal scapular nerve

Question 9

Rhomboid Minor

Answer 9

O: Lower part of ligamentum nuchae; spinous processes of 7th cervical and 1st thoracic vertebrae
I: medial lip of scapula at base of spine
A: elevation and retraction of scapula
N: dorsal scapular nerve