Ex. II - Origins & Insertions

Question 1

pectoantebrachialis

Answer 1

o: manubrium of sternum; i: proximal end of ulna

Question 2

pectoralis major

Answer 2

O: clavicular head; i: bicipital groove of humerus

Question 3

pectoralis minor

Answer 3

o: 3rd to 5th ribs; i: coracoid process of scapula

Question 4

external oblique

Answer 4

o: 5th to 12th ribs; i: illiac crest, pubic tubercle, linea alba

Question 5

clavtrapezius

Answer 5

o: lambdoidal ridge of skull; I: raphe of clavicle

Question 6

acromiotrapezius

Answer 6

o: spines of cervical & ant. thoracic vertebrae (C2 to T1-4); i: metacromion & scapula spine

Question 7

spinotrapezius

Answer 7

o: spines of thoracic vert. (T1-4 to T11-13); i: scapula spine & surrounding fascia

Question 8

latissimus dorsi

Answer 8

o: thoracic & lumbar vert. (T4-5 to L6); i: medial shaft of humerus

Question 9

levator scapulae ventralis

Answer 9

o: transverse process of atlas and occipital bone; i: metacromion of scapule

Question 10

acromiodeltoid

Answer 10

o: acromion of scapula; i: deltoid ridge of humerus, spinodeltoid’s outer surface & branchialis anticus

Question 11

spinodeltoid

Answer 11

o: spine of scapula; i: deltoid ridge of humerus

Question 12

clavobrachialis (clavodeltoid)

Answer 12

o: raphe of clavicle; i: ulna beneath semilunar notch

Question 13

teres major

Answer 13

o: inferior angle of scapula, i: intertubercular sulcus of humerus

Question 14

subscapularis

Answer 14

o: subscapular fossa; i: lesser tubercle of humerus

Question 15

xiphihumeralis

Answer 15

o: xiphoid process of sternum; i: humerus

Question 16

internal oblique

Answer 16

o: iliac crest; i: linea alba

Question 17

transversus abdominis

Answer 17

o: iliac crest; i: xiphoid process of sternum, linea alba

Question 18

rectus abdominis

Answer 18

o: crest of pubic bone; i: 5th to 7th ribs, xiphoid process of sternum

Question 19

errector spinae

Answer 19

o: spinous process of T9-12; i: spinous processes of T1-2

Question 20

external intercostals

Answer 20

o: lower border of ribs; i: upper border of posterior-ward rib

Question 21

rhomboideus major (smaller); rhomboideus minor (larger-behind scapula)

Answer 21

o: spines of cervical & thoracic vert. (T1-4); i: vert. border of scapula & inferior angle (major)

Question 22

rhomboideus capitis

Answer 22

o: lambdoidal ridge of skull; i: vertebral border of scapula

Question 23

supraspinatus

Answer 23

o: supraspinous fossa of scapula; i: greater tuberosisty of humerus

Question 24

infraspinatus

Answer 24

o: infraspinous fossa of scapula; i: lateral part of greater tuberosity of humerus

Question 25

splenius

Answer 25

o: spinous processes of cervical vertebrae; i: mastoid process of temporal and occiptal bones

Question 26

sternomastoid

Answer 26

o: manubrium of sternum & midventral line ant. to manubrium; i: mastoid process & lambdoidal ridge

Question 27

sternohyoid

Answer 27

o: first costal cartilage; i: body of hyoid

Question 28

digastric

Answer 28

o: jugular process of occipital, mastoid process of temporal; i: ventral border of mandible

Question 29

mylohyoid

Answer 29

o: medial surface of mandible; i: median raphe- from hyoid to mandibular symphysis

Question 30

masseter

Answer 30

o: malar & ventral border of zygomatic arch; i: mandible- ventral border & ext. carotid fossa

Question 31

temporalis

Answer 31

o: temporal fossa of parietal, squamosal, & frontal; i: coronoid process of mandible

Question 32

cleidomastoid

Answer 32

o: mastoid process of temporal; i: raphe of clavicle

Question 33

sternothyroid

Answer 33

o: manubrium of sternum; i: thyroid cartilage

Question 34

thryohyoid

Answer 34

o: thyroid cartilage; i: hyoid bone