myology, o/i superficial back and arm

Question 1

trapzius superior fibers: o, I

Answer 1

O: External occipital protuberance, the medial portion of superior nuchal line of occiput, medial margin of ligamentum nuchae,

I: Posterior border of lateral 1/3 of the clavicle

Question 2

middle fibers of trapezius: o, I

Answer 2

O: Inferior aspect of ligamentum nuchae, spinous proces of 7th cervical and upper thoracic

I: Medial margin of acromion process of scapula, superior lip of posterior border of spine of
scapula

Question 3

inferior fibers of trapezius o, I

Answer 3

: Spinous process of inferior thoracic vertebrae

I: Medial end of the spine of scapula

Question 4

rhomboid major: o, i

Answer 4

O: Spinous processes of T2 - T5 vertebrae

I: Posterior surface of medial border of scapula from the root of the spine of the scapula to the
inferior angle

Question 5

rhomboid minor o, i

Answer 5

O: Lower end of ligamentum nuchae and spinous process of C7 and T1 vertebrate
I: Posterior surface of medial border of scapula at the root of the spine of the scapula

Question 6

levator scapulae: o,i

Answer 6

o:transverse process of c1-c4 vertebrae at the posterior tubercles
I: Posterior surface of medial border of scapula from superior angle to root of spine of the scapula

Question 7

Latissimus dorsi, O i

Answer 7

O: Spinous processes of T7-T12 and interpinous ligaments; via the thoracolumbar fascia to
the spinous process of the lumbar vertebrae, related interspinous ligaments, and posterior iliac crest; last three or four ribs, inferior angle of the scapula
I: Floor of the intertubercular sulcus

Question 8

teres major o,i

Answer 8

O: Lower one third of lateral border of the scapula

I: Medial lip of intertubercular sulcus on the anterior surface of the humerus; crest of the lesser tubercle of the humerus

Question 9

deltoid, posterior fibers o, i

Answer 9

O: Inferior edge of the crest of the spine of the scapula
I: Deltoid tuberosity of the humerus

Question 10

deltoid middle fibers o,i

Answer 10

O: Lateral margin of the acromion
I: Deltoid tuberosity of the humerus

Question 11

deltoid anterior fibers, o, i

Answer 11

O: Anterior border of the lateral 1/3 of clavicle
I: Deltoid tuberosity of the humerus

Question 12

pectoralis major, o,i

Answer 12

O: Clavicular head - anterior surface of medial half of clavicle;
Sternocostal head - anterior surface of the sternum; first seven costal cartilages; sternal end of the sixth rib; aponeurosis of external oblique
I: Lateral lip of the intertubercular sulcus of humerus; crest of greater tubercle of humerus

Question 13

pectoralis minor, o,i

Answer 13

O: Anterior surface of the superior borders of third to fifth ribs; and from deep fascia overlying the
related intercostal spaces
I: Coracoid process of scapula (medial border and upper surface)

Question 14

subclavius, o

Answer 14

first rib at the junction between rib and costal cartilage/ groove on the inferior surface of the middle on-third of clavicle

Question 15

Serratus anterior:o

Answer 15

Lateral (ext) surfaces of upper 8-9 ribs and deep fascia overlying the ralet intercostal spaces/ costal surfaces of medial border of scap

Question 16

Choracobrachialis, o

Answer 16

o: apex of the coracoid process/ Linear roughening on the ;medial midshaft of the humerus

Question 17

Supraspinatus, o

Answer 17

medial two-third of infraspinous fossa of scapula and deep fascia that covers the muscle; most superior facet on the greater tubercle of humerus

Question 18

infraspinatus, i

Answer 18

medial two third of the infaspinous foxxa of scapula and deep fascia that covers the muscle. middle facet on the posteior surface of the greater tubercle of the humerus

Question 19

Teres minor: o

Answer 19

upper two thirds of the posterior surface of the lateral border of the scapula/ inferior facet of the posterior surface of the greater tubercle of the humerus

Question 20

subscapularis, o

Answer 20

medial two thirds of the subscapular fossa lesser tubercle of humerus

Question 21

biceps brachii o

Answer 21

long head- supraglenoid tubercle of the scapula
short head: apex of coracoid process of the scapula, radial tuberosity and fascia of the forearm via bicipital apponeurosis

Question 22

brachialis o

Answer 22

distal half of the anterior aspect of humerus and adjacent intermuscular septae, coronoid process and tuberosity of ulna

Question 23

triceps brachii o long head

Answer 23

infraglenoid tubercle of scapula

Question 24

triceps brachii o medial head

Answer 24

posterior surface of the distalhalf of the humerus (proximal radial groove)

Question 25

triceps brachii o lateral head

Answer 25

posterior surface of the proximal half of the humerus (superior radial groove)

Question 26

triceps brachii i

Answer 26

olecranon