Deep back muscles

Question 1

Splenius cervicis attachment

Answer 1

spinous process of T3-6 to transverse process of C1-3

Question 2

Splenius cervicis innervation

Answer 2

dorsal rami of mid cervical nerves

Question 3

Splenius capitis attachment

Answer 3

spinous process of C7-T4 and lower ligamentum nuchae TO lateral 3rd superior nuchal line on occiput and mastoid process on temporal bone

Question 4

Splenius capitis innervation

Answer 4

dorsal rami of lower cervical nerves

Question 5

Splenius cervicis and splenius capitis action

Answer 5

extensors of head and neck when contracted bilat, rotators of head and neck with unilateral contraction

Question 6

Spinotransveralis group

Answer 6

splenius cervicis and splenius capitis

Question 7

Erector spinae muscles

Answer 7

iliocostalis, longissimus, and spinalis

individual fibers spanning 6-10 vertebral levels all from common tendon

Question 8

Iliocostalis lumborum attachment

Answer 8

common tendon to the angle of lower 7 ribs

Question 9

Iliocostalis thoracis attachment

Answer 9

angle of lower 6 ribs to angle of upper 6 ribs and transverse process of C7

Question 10

Iliocostalis cervicis attachment

Answer 10

angle of ribs 3-6 to transverse processes of C4-6

Question 11

Longissimus capitis attachment

Answer 11

transverse processes of C4-T5 and articular processes of lower 4 cervical vertebrae to mastoid process

Question 12

Longissimus cervicis attachment

Answer 12

transverse processes of T1-5 to transverse processes of C2-6

Question 13

Longissimus thoracis attachment

Answer 13

common tendon and transverse processes of all lumbar vertebrae to transverse processes of all throacic vertebrae and ribs 2-12

Question 14

Spinalis thoracis attachment

Answer 14

spinous processes of T10-L3 to spinous processes of T1-8

Question 15

Spinalis cervicis and spinalis capitis attachment

Answer 15

lower ligamentum nuchae and spinous process of C7 to spinous process of C2

Question 16

Erector spinae muscles innervation

Answer 16

dorsal rami of each region

Question 17

Erector spinae muscles action

Answer 17

extend back and neck when contracting bilat

laterally flex back when contracted unilaterally

Question 18

Transversospinalis group

Answer 18

semispinalis, multifidus, and rotatores

Question 19

Semispinalis thoracis attachment

Answer 19

transverse process of T6-T10 to spinous process of C5-T4

Question 20

Semispinalis cervicis attachment

Answer 20

transverse process of T1-8 to spinous process of C2-5

Question 21

Semispinalis capitis attachment

Answer 21

transverse process of T6-C7, and articular processes of C4-6 TO occipital bone between inferior and superior nuchal lines

Question 22

Semispinalis action

Answer 22

extension of the neck and rotation of head

Question 23

Multifidus (span 2-4 levels) attachment

Answer 23

sacrum, PSIS, mammillary processes of the lumbar vertebrae, transverse processes of the thoracic vertebrea, and articular processes of lower 4 cervical vertebrae TO base of the spinous processes of all vertebra L5-C2 (most prominent in the lumbar region)

Question 24

Multifidus action

Answer 24

stabilization of vertebral column

Question 25

Rotatores longi attachment

Answer 25

transverse processes to the spinous process of segment two levels higher (most pronounced in the thoracic region but present over entire spine)

Question 26

Rotatores brevis attachment

Answer 26

transverse processes to the spinous process of one level higher

Question 27

Rotatores action

Answer 27

stabilizes, extends, and rotates spine

Question 28

Transversospinalis group innervation

Answer 28

dorsal rami of the spinal nerves

Question 29

suboccipital muscles

Answer 29

obliquus capitis and rectus capitis posterior

Question 30

Obliquus capitis inferior attachent

Answer 30

spinous process of C2 to transverse process of C1

Question 31

Obliquus capitis inferior action

Answer 31

unilateral contraction rotates head to same side

Question 32

Obliquus capitis superior attachment

Answer 32

transverse process of C1 to occipital bone above inferior nuchal line

Question 33

Rectus capitis posterior major attachment

Answer 33

spinous process of C2 to occipital bone below inferior nuchal line

Question 34

Obliquus capitis superior and Rectus capitis posterior major action

Answer 34

bilateral contraction extends head, unilateral to bend head to same side

Question 35

Rectus capitis posterior minor attachment

Answer 35

posterior tubercle of C1 to occipital bone below inferior nuchal line superolaterally

Question 36

Rectus capitis posterior minor action

Answer 36

bilateral to contribute to head extension