ANOIA Back/Spine/Thorax

Question 1

Origin of trapezius

Answer 1

external occipital protuberance, medial portion of superior nuchal line of occiput, ligamentum nuchae, spinous process C7-T12

Question 2

Insertion of trapezius

Answer 2

lateral 1/3 of clavicle, acromion, spine of scapula

Question 3

Action of upper fibers trapezius

Answer 3

Bilaterally: extend head and neck
Unilaterally: lateral flexion of head to same side, rotate head opposite side, elevate scapula, upward rotation of scapula (S/T joint)

Question 4

Action of middle fibers trapezius

Answer 4

adduct scapula (S/T joint), stabilize scapula (S/T joint)

Question 5

Action of lower fibers trapezius

Answer 5

depress scapula (S/T joint), Upwardly rotate scapula (S/T joint)

Question 6

Nerve innervation trapezius

Answer 6

Spinal portion of crainial nerve XI (accessory) and ventral ramus C2,3,4

Question 7

Origin Rhomboid major

Answer 7

spinous process T2-T5

Question 8

Insertion Rhomboid major

Answer 8

medial border of scapula between spine and inferior angle

Question 9

Action rhomboid major

Answer 9

adduct scapula (scapulothoracic joint), elevate scapula (S/T joint), downwardly rotate scapula (S/T joint)

Question 10

Nerve innervation rhomboid major

Answer 10

dorsal scapular C4, 5

Question 11

origin levator scapula

Answer 11

transverse processes of C1-C4

Question 12

Insertion levator scapula

Answer 12

medial border of scapula between superior angle and superior portion of spine of scapula

Question 13

action levator scapula

Answer 13

Unilaterally: elevate scapula (scapulothoracic joint), downwardly rotate scapula (S/T joint), Laterally flex head and neck, rotate head and neck to same side
Bilaterally: Extend head and neck

Question 14

nerve innervation levator scapula

Answer 14

cervical 3, 4 and dorsal scapular C4, 5

Question 15

Origin longissimus

Answer 15

common tendon (thoracis), transverse processes of upper 5 thoracic vertebrae (cervicis and capitis)

Question 16

Insertion longissimus

Answer 16

Lower 9 ribs and transverse procsses of thoracic vertebrae (thoracis), transverse processes of cervical vertebrae (cervicis), mastoid process of temporal bone (capitis)

Question 17

Action longissimus

Answer 17

Unilaterally: laterally flex vertebral column to same side
Bilaterally: extend vertebral column

Question 18

nerve innervation longissimus

Answer 18

spinal

Question 19

origin multifidi

Answer 19

sacrum and transverse processes of lumbar through cervical vertebrae

Question 20

insertion multifidi

Answer 20

spinous processes of lumbar vertebrae through C2 (span 2 or 4 vertebrae)

Question 21

action multifidi

Answer 21

Unilaterally: rotate vertebral column to opposite side
Bilaterally: extend vertebral column

Question 22

nerve innervation multifidi

Answer 22

spinal

Question 23

origin semispinalis capitis

Answer 23

transverse processes of C4-T5

Question 24

insertion semispinalis capitis

Answer 24

between superior and inferior nuchal lines of occiput

Question 25

nerve innervation semispinalis capitis

Answer 25

cervical

Question 26

action semispinalis capitis

Answer 26

extend vertebral column and head

Question 27

origin splenius cervicis

Answer 27

spinous processes of T3-T6

Question 28

insertion splenius cervicis

Answer 28

transverse processes of C1-C3

Question 29

action splenius cervicis

Answer 29

Unilaterally: rotate head and neck at the same time, laterally flex head and neck to same side Bilaterally: extend head and neck

Question 30

nerve innervation splenius cervics

Answer 30

cervical

Question 31

origin quadratus lumborum

Answer 31

posterior iliac crest

Question 32

insertion quadratus lumborum

Answer 32

last rib and transverse processes of L1-L4

Question 33

action quadratus lumborum

Answer 33

Unilaterally: laterally tilt (elevate) pelvis, laterally flex vertebral column to same side Bilaterally: fix last rib during forced inhalation, assist to extend vertebral column

Question 34

nerve innervation quadratus lumborum

Answer 34

lumbar plexus T12, L1, 2, 3

Question 35

origin intercostals

Answer 35

inferior border of the rib above

Question 36

insertion intercostals

Answer 36

superior border of the rib above

Question 37

action intercostals

Answer 37

External: draw ribs superiorly to assist in inhalation Internal: draw ribs inferiorly to assist with exhalation

Question 38

nerve innervation intercostals

Answer 38

thoracic

Question 39

origin serratus posterior superior

Answer 39

spinous processes C7-T1

Question 40

insertion serratus posterior superior

Answer 40

posterior surface of ribs 2-5

Question 41

action serratus posterior superior

Answer 41

elevate ribs during inhalation

Question 42

nerve innervation serratus posterior superior

Answer 42

T 1, 2, 3, 4

Question 43

origin interspinalis

Answer 43

cervical: spanning the spinous processes of C2-T3 lumbar: spanning the spinous processes of T12-L5

Question 44

insertion interspinalis

Answer 44

cervical: spanning the spinous processes of C2-T3 lumbar: spanning the spinous processes of T12-L5

Question 45

nerve innervation interspinalis

Answer 45

spinal

Question 46

action interspinalis

Answer 46

extend vertebral column

Question 47

origin external oblique

Answer 47

external surfaces of ribs 5-12

Question 48

insertion external oblique

Answer 48

anterior part of the iliac crest, rectus sheath to linea alba

Question 49

action external oblique

Answer 49

Unilaterally: flaterally flex vertebral column to same side, rotate vertebral column to opposite side Bilaterally: flex vertebral column, compress abdominal contents

Question 50

nerve innervation external oblique

Answer 50

(T5-6), T7-11, T12

Question 51

Origin Transverse abdominis

Answer 51

lateral inguinal ligament, iliac crest, thoracolumbar fascia and internal surface of lower 6 ribs

Question 52

insertion transverse abdominis

Answer 52

rectus sheath to linea alba

Question 53

action transverse abdominis

Answer 53

compress abdominal contents

Question 54

nerve innervation transverse abdominis

Answer 54

T7-12, L1, iliohyogastric and ilioinguinal, ventral divisions