Back Muscles

Question 1

proximal attachment trapezius

Answer 1

medial 1/3 superior nuchal line, nuchal ligament, spinous processes of C7-T12

Question 2

distal attachment trapezius

Answer 2

lateral 1/3 clavicle, acromion, spine of scapula

Question 3

inn. of trapezius

Answer 3

spinal accessory nerve

Question 4

proximal attachment latissimus dorsi

Answer 4

iliac crest, spinous processes of inferior 6 thoracic vertebrae, inferior 3 or 4 ribs

Question 5

distal attachment of latissimus dorsi

Answer 5

intertubercular groove of humerus

Question 6

inn. of latissimus dorsi

Answer 6

thoracodorsal nerve (C6, C7, C8)

Question 7

proximal attachment rhomboid major

Answer 7

spinous processes of T2-T5 vertebrae

Question 8

proximal attachment rhomboid minor

Answer 8

spinous processes of C7 and T1 vertebrae, nuchal ligament

Question 9

distal attachment of rhomboids

Answer 9

medial border of scapula

Question 10

inn. of rhomboids

Answer 10

dorsal scapular nerve (C4, C5)

Question 11

proximal attachment levator scapulae

Answer 11

transverse processes of C1-C4 vertebrae

Question 12

distal attachment levator scapulae

Answer 12

superior angle of scapula

Question 13

inn. levator scapulae

Answer 13

dorsal scapular (C35) and cervical (C3, C4) nerves

Question 14

trapezius action

Answer 14

superior-elevation of scapula
middle- retraction of scapula
inferior- depression of scapula

Question 15

action of levator scapulae

Answer 15

elevation and downward rotation of scapula

Question 16

action of rhomboids

Answer 16

elevation, retraction, and downward rotation of scapula

Question 17

action of latissimus dorsi

Answer 17

retraction and downward rotation of scapula

Question 18

proximal attachment of serratus posterior superior

Answer 18

nuchal ligament, spinous processes of C7-T3

Question 19

distal attachment of serratus posterior superior

Answer 19

ribs 2-5 (superior border)

Question 20

inn. of serratus posterior superior

Answer 20

2nd to 5th intercostal nerves

Question 21

proximal attachment of serratus posterior inferior

Answer 21

spinous processes of T11-L2

Question 22

distal attachment of serratus posterior inferior

Answer 22

ribs 9-12 (inferior border)

Question 23

inn. of serratus posterior inferior

Answer 23

9th to 11th intercostal nerves, subcostal nerves (T12)

Question 24

action of serratus posterior muscles

Answer 24

superior- breathing in, pulls ribs up
inferior- breathing out, pulls ribs down

Question 25

proximal attachment of splenius capitis

Answer 25

nuchal ligament, spinous processes of C7-T4

Question 26

distal attachment of splenius capitis

Answer 26

mastoid process and superior nuchal line of skull

Question 27

inn. of splenius capitis and cervicis

Answer 27

posterior rami of spinal nerves

Question 28

proximal attachment of splenius cervicis

Answer 28

spinous processes of T3-T6

Question 29

distal attachment of splenius cervicis

Answer 29

transverse processes of C1-C4

Question 30

proximal attachment of iliocostalis and longissimus

Answer 30

aponeurosis tendon tethered to iliac crest, sacrum, sacroiliac ligaments, sacral and lumbar spinous processes

Question 31

distal attachment of iliocostalis

Answer 31

angles of ribs and transverse processes of cervical vertebrae

Question 32

distal attachment of longissimus

Answer 32

ribs and mastoid process of skull

Question 33

proximal attachment of spinalis

Answer 33

lumbar and thoracic spinous processes

Question 34

distal attachment of spinalis

Answer 34

upper thoracic spinous processes

Question 35

inn. of the three erector spinae muscles (I,L,S)

Answer 35

posterior rami of spinal nerves

Question 36

action of erector spinae, spleniuses, trapezius

Answer 36

extension of head

Question 37

action of erector spinae

Answer 37

extension of back

Question 38

muscles involved in side bending

Answer 38

splenius, rhomboids, serratus anterior

Question 39

muscles involved in rotation

Answer 39

iliocostalis, longissimus, transversospinalis, splenius

Question 40

muscles of the suboccipital triangle

Answer 40

oblique capitis superior, rectus capitis posterior major, oblique capitis inferior