Back Inferior to C7

Question 1

Trapezius Origin

Answer 1

Medial Third of superior nuchal line; external occipital protuberance; nuchal ligament; spinous processes of C7-T12 vertebrae

Question 2

Trapezius Insertion

Answer 2

Lateral third of clavicle; acromion; spine of scapula

Question 3

Trapezius Innervation

Answer 3

Spinal Accessory Nerve (XI: motor fibers); C3,C4 spinal nerves (pain and proprioceptive fibers)

Question 4

Trapezius Action

Answer 4

Descending fibers elevate scapula; ascending fibers depress scapula; Middle or all parts retract scapula; descending and ascending fibers rotate glenoid cavity superiorly

Question 5

Trapezius Roots

Answer 5

C3;C4

Question 6

Latissimus Dorsi Origin

Answer 6

Spinous Processes of inferior 6 thoracic vertebrae; thoracolumbar fascia; iliac crest; inferior 3 or 4 ribs

Question 7

Latissimus Dorsi Insertion

Answer 7

Floor of intertubercular sulcus of humerus

Question 8

Latissimus Dorsi Innervation

Answer 8

Thoracodorsal Nerve (C6;C7:C8)

Question 9

Latissimus Dorsi Action

Answer 9

Extends, Adducts, and medially rotates humerus; raises body towards arms during climbing

Question 10

Latissimus Dorsi Roots

Answer 10

C6;C7:C8

Question 11

Rhomboid Minor Origin

Answer 11

Nuchal Ligament; Spinous processes of C7 and T1 vertebrae

Question 12

Rhomboid Minor Insertion

Answer 12

Smooth triangular area at medial end of scapular spine

Question 13

Rhomboid Major Origin

Answer 13

Spinous processes of T2-T5 vertebrae

Question 14

Rhomboid Major Insertion

Answer 14

Medial border of scapula from level of spine to inferior angle

Question 15

Rhomboid Minor and Major Innervation

Answer 15

Dorsal Scapular nerve (C4,C5)

Question 16

Rhomboid Minor and Major Roots

Answer 16

C4,C5

Question 17

Levator Scapulae Origin

Answer 17

Posterior tubercles of transverse processes of C1-C4 vertebrae

Question 18

Levator Scapulae Insertion

Answer 18

Medial border of scapula superior to root of scapular spine

Question 19

Levator Scapulae Innervation

Answer 19

Dorsal Scapular nerve (C5); Cervical nerves C4 and C5

Question 20

Levator Scapulae Roots

Answer 20

C3;C4

Question 21

Levator Scapulae Action

Answer 21

Elevates scapula and tilts its glenoid cavity inferiorly by rotating scapula

Question 22

Serratus Posterior Superior Origin

Answer 22

Nuchal Ligament; Spinous processes of C7-T3

Question 23

Serratus Posterior Superior Insertion

Answer 23

Superior borders of ribs 2-4

Question 24

Serratus Posterior Superior Innervation

Answer 24

2nd to 5th intercostal nerves

Question 25

Serratus Posterior Superior Action

Answer 25

Proprioception (elevate ribs)

Question 26

Serratus Posterior Inferior Origin

Answer 26

Spinous processes of T11-L2

Question 27

Serratus Posterior Inferior Insertion

Answer 27

Inferior borders of ribs 8-12 near the angle

Question 28

Serratus Posterior Inferior Action

Answer 28

Proprioception (depress ribs)

Question 29

Serratus Posterior Inferior Innervation

Answer 29

Anterior rami to T9-T12 thoracic spinal nerves

Question 30

Serratus Posterior Inferior Roots

Answer 30

T9-T12

Question 31

Erector Spinae (Iliocostalis, Longissimus, Spinalis) Origin

Answer 31

Broad tendon from posterior part of iliac crest; posterior surface of sacrum; sacroiliac ligaments; sacral and inferior lumbar spinous processes; supraspinous ligament

Question 32

Iliocostalis Insertion

Answer 32

Lumborum, thoracis, cervicis; fibers run superiorly to angles of lower ribs and cervical transverse processes

Question 33

Longissimus Insertion

Answer 33

Thoracis, Cervicis, Capitis; fibers run superiorly to ribs between tubercles and angles to transvers processes in thoracic and cervical regions; mastoid process of temporal bone

Question 34

Spinalis Insertion

Answer 34

Thoracis, Cervicis, Capitis; fibers run superiorly to spinous processes in the upper thoracic region and to cranium

Question 35

Erector Spinae Action

Answer 35

Acting Bilaterally: Extend vertebral column and head | Acting Unilaterally: Laterally Flex vertebral column

Question 36

Semispinalis (of the transversospinalis) Origin

Answer 36

Arises from transverse processes of C4-T12

Question 37

Semispinalis (of the transversospinalis) Insertion

Answer 37

Thoracis, Cervicis, Capitis; fibers run superomedially to occipital bone and spinous processes in thoracic and cervical regins, 4-6 segments

Question 38

Multifidus (of the transversospinalis) Origin

Answer 38

Posterior Sacrum; posterior superior iliac spine; aponeurosis of erector spinae; sacroilliac ligaments; mammilary processes of lumbar vertebrae; transverse processes of T1-T3; articular processes of C4-C7

Question 39

Multifidus (of the transversospinalis) Insertion

Answer 39

Lumbar region; fibers pass obliquely superomedially to entire length of spinous processes; 2-4 segments superior to proximal attachement

Question 40

Rotatores (of the transversospinalis) Origin

Answer 40

Arise from transverse processes of vertebrae; best developed in thoracic region

Question 41

Rotatores (of the transversospinalis) Insertion

Answer 41

Superomedially to attach to junction of lamina and transverse process of vertebra 1-2 segments superior to proximal attachment

Question 42

Transversospinalis (Semispinalis, Multifidus, Rotatores) Innervation

Answer 42

Posterior rami of spinal nerves

Question 43

Semispinalis Action

Answer 43

Unilaterally: rotates head and neck contralaterally, laterally flexes head and neck ipsilaterally Bilaterally: extends head, cervical, and thoracic regions of the vertebral column

Question 44

Multifidus Action

Answer 44

Stabilizes vertebrae during local movements of vertebral column

Question 45

Rotatores Action

Answer 45

Stabilizes vertebrae and assist with local extension and rotation; proprioception