Back Deep Layer

Question 1

Splenii Capitus/Splenii Cervicus: O

Answer 1

Inferior ½ of Ligamentum Nuchae and SPs of C7-T3/4

Question 2

Splenii Capitus/Splenii Cervicus: I

Answer 2

• Lateral aspect of Mastoid Process and lateral 1/3 of superior Nuchal Line of Occipitalis (capitus)
• posterior Tubercle of TVPs of C1-4 (cervicus)

Question 3

Splenii Capitus/Splenii Cervicus: N

Answer 3

Segmentally innervated by Dorsal Rami of spinal nerves

Question 4

Splenii Capitus/Splenii Cervicus: A

Answer 4

• Extends Head and Neck (Bilaterally)
• Laterally flexes Head (Unilaterally)
• Rotates Head (Ipsilaterally)

Question 5

Iliocostalis: O

Answer 5

Broad Tendon to posterior surface of Iliac Crest, Sacrum and Lumbar SPs

Question 6

Iliocostalis : I

Answer 6

Angles of ribs and posterior Tubercles of C4-6 (on TVPs)

Question 7

Iliocostalis: N

Answer 7

Segmentally innervated by Rami of Spinal Nerves

Question 8

Iliocostalis : A

Answer 8

• Extends Head & Back (Bilaterally)

- Laterally flexes Head & Spine (Unilaterally)

Question 9

Longissimus: O

Answer 9

Broad Tendon to posterior surface of Iliac Crest, Sacrum and Lumbar SPs

Question 10

Longissimus: I

Answer 10

TVPs of C2-T12 and Mastoid Process of Temporal Bone

Question 11

Longissimus: N

Answer 11

Segmentally innervated by Rami of Spinal Nerves

Question 12

Longissimus: A

Answer 12

• Extends Head & Back (Bilaterally)
• Laterally flexes Head & Spine (Unilaterally)
• Rotates Head (Ipsilaterally)

Question 13

Spinalis: O

Answer 13

Broad Tendon to posterior surface of Iliac Crest, Sacrum and Lumbar SPs

Question 14

Spinalis: I

Answer 14

SPs in superior Thoracic region

Question 15

Spinalis: N

Answer 15

Segmentally innervated by Rami of Spinal Nerve

Question 16

Spinalis: A

Answer 16

• Extends Head & Back (Bilaterally)

- Laterally flexes Head & Spine (Unilaterally)

Question 17

Semispinalis: O

Answer 17

TVPs of C4-T12

Question 18

Semispinalis: I

Answer 18

SPs of all Thoracic and Cervical Vertebrae spanning 4-6 segments

Question 19

Semispinalis: N

Answer 19

Segmentally innervated by Dorsal Rami of Spinal Nerves

Question 20

Semispinalis: A

Answer 20

• Extends Head & Spine (Bilaterally)
• Laterally flexes Spine (Unilaterally)
• Rotates Spine to opposite side (Unilaterally)

Question 21

Multifidus: O

Answer 21

Vertebral arches of TVPs of C2-S4

Question 22

Multifidus: I

Answer 22

After spanning 2-4 vertebrae into SPs

Question 23

Multifidus: N

Answer 23

Segmentally innervated by Dorsal Rami of Spinal Nerves

Question 24

Multifidus: A

Answer 24

• Extends Spine (Bilaterally)
• Laterally flexes Spine (Unilaterally)
• Rotates Spine to opposite side (Unilaterally)

Question 25

Rotatores: O

Answer 25

TVPs of Vertebrae

Question 26

Rotatores: I

Answer 26

SPs of vertebra above

Question 27

Rotatores: N

Answer 27

Segmentally innervated by Dorsal Rami of Spinal Nerves

Question 28

Rotatores: A

Answer 28

Rotates Spine to opposite side (Unilaterally)

Question 29

Interspinalis: O

Answer 29

SPs of Vertebrae

Question 30

Interspinalis: I

Answer 30

SPs of vertebra above

Question 31

Interspinalis: N

Answer 31

Segmentally innervated by Dorsal Rami of Spinal Nerves

Question 32

Interspinalis: A

Answer 32

Aid in extension of the spine

Question 33

Intertransversarii: O

Answer 33

TVPs of Vertebrae

Question 34

Intertransversarii: I

Answer 34

TVPs of vertebra above

Question 35

Intertransversarii: N

Answer 35

Segmentally innervated by Dorsal Rami of Spinal Nerves

Question 36

Intertransversarii: A

Answer 36

Aid in lateral flexion of Spine (Unilaterally)