Intrinsic Back

Question 1

Splenius capitis origin

Answer 1

Inferior ligamentum nuchae

C7-T3/4

Question 2

Splenius Capitis insertion

Answer 2

Superior nuchae line

Mastoid process

Question 3

Splenius Capitis action

Answer 3

Unilateral: rotate head/neck same side
Laterally flex neck
Bilateral: extend head and neck

Question 4

Splenius Capitis nerve

Answer 4

Dorsal rami

Question 5

Splenius cervicis origin

Answer 5

Spinous processes T3-T6

Question 6

Splenius cervicis insertions

Answer 6

Transverse processes C1-C3

Question 7

Splenius cervicis Action

Answer 7

Unilateral: rotate head/neck to same side
Laterally flex neck
Bilateral: extend neck

Question 8

Splenius cervicis nerve

Answer 8

Dorsal rami

Question 9

Erector spinae origin

Answer 9

Broad tendon, posterior iliac crest, posterior sacrum, sacroiliac ligaments, sacral and inferior lumbar spinous, supraspinous ligaments

Question 10

Erector spinae action

Answer 10

Bilateral: posture, extend trunk/neck/head
Unilateral: laterally flex trunk, rotate trunk same side

Question 11

Erector spinae nerve

Answer 11

Dorsal rami

Question 12

Spinalis (medial column) insertion

Answer 12

Thoracis: spinous processes mid-upper thoracic spine
Capitis: blends with semispinalis capitis

Question 13

Longissimus (intermediate) insertion

Answer 13

Thoracis: transverse process/ribs in thoracic
Cervicis: transverse processes in cervical region
Capitis: mastoid process

Question 14

Iliocostalis (lateral) insertion

Answer 14

Lumborum: angle of ribs 7-12
Thoracis: angle of ribs 1-6, transverse process C7
Cervicis: transverse process C4-6

Question 15

Transversospinalis attachments

Answer 15

From transverse processes to spinous processes in groove

Question 16

Transversospinalis action

Answer 16

Unilateral: laterally flex ipsilateral, rotate contralaterallay
Bilateral: extend head/column, stabilize column

Question 17

Transversospinalis nerve

Answer 17

Dorsal rami

Question 18

Semispinalis (Capitis, cervicis, thoracis) origin

Answer 18

Thoracic and cervical transverse processes

Question 19

Semispinalis (Capitis, cervicis, thoracis) insertion

Answer 19

Spinous processes multiple levels superior

Question 20

Multifidus origin

Answer 20

Transverse processes from sacrum to C4

Question 21

Multifidus insertion

Answer 21

Spinous processes 2-4 segments above up to C2

Question 22

Rotatores origin

Answer 22

Transverse processes

Question 23

Rotatores insertion

Answer 23

Base of spinous processes 1-2 segments superior

Question 24

Interspinalis

Answer 24

Connects adjacent spinous processes to extend column

Question 25

Intertransversari

Answer 25

Connects adjacent transverse processes to laterally flex column

Question 26

Levator costorum

Answer 26

Extends from transverse processes to angle of ribs to aide in elevation (breathing)

Question 27

Spinotransversales muscles

Answer 27

Splenius capitus

Splenius cervicus

Question 28

Erector spinae

Answer 28

Iliocostalis
Longissimus
Spinalis

Question 29

Transversospinales muscles

Answer 29

Semispinalis
Multifidus
Rotares