Back And Suboccipital Muscles

Question 1

Origin of the serratus posterior superior?

Answer 1

Spinous processes of C7-T3

Question 2

Insertion of the serratus posterior superior?

Answer 2

Superior border of ribs 2-5

Question 3

Action of the serratus posterior superior?

Answer 3

Elevated ribs during respiration

Question 4

Origin of the serratus posterior inferior?

Answer 4

Spinous processes of T11-L2

Question 5

Insertion of the serratus posterior inferior?

Answer 5

Superior border of ribs 8-12

Question 6

Action of the serratus posterior inferior?

Answer 6

Depressed ribs during respiration

Question 7

Origin of the splenius (capitis & cervicis)

Answer 7

Capitis: ligamentum nuchae
Cervicis: spinous processes of T3-T6

Question 8

Insertion of the Splenius (capitis & cervicis)

Answer 8

Capitis: mastoid process, nuchal line
Cervicis: transverse processes of C1-C4

Question 9

Action of Splenius (Capitis & Cervicis)

Answer 9

Bilateral: head and neck extension
Unilateral: Lateral flexion, Ipsilateral rotation of head and neck

Question 10

Origin of Iliocostalis

Answer 10

Sacrum, iliac crests, and lumbar spinous processes

Question 11

Insertion of the Iliocostalis

Answer 11

Angles of ribs

Question 12

Action of the Iliocostalis

Answer 12

Bilateral: Extension of head and spine
Unilateral: Lateral flexion of spine

Question 13

Origin of Longissimus

Answer 13

Sacrum, iliac crests, and lumbar spinous processes

Question 14

Insertion of Longissimus

Answer 14

Thoracic and cervical transverse processes

Question 15

Action of Longgisimus

Answer 15

Bilateral: Extension of head and spine
Unilateral: Lateral flexion of spine

Question 16

Origin of spinalis

Answer 16

Sacrum, iliac crests, and lumbar spinous processes

Question 17

Insertion of the spinalis

Answer 17

Thoracic spinous processes

Question 18

Action of spinalis

Answer 18

Bilateral: Extension of head and spine
Unilateral: Lateral flexion of spine

Question 19

Origin of semispinalis

Answer 19

Transverse processes of C4-T12

Question 20

Insertion of semispinalis

Answer 20

Occipital bone, spinous process of adjacent superior vertebrae

Question 21

Action of the semispinalis

Answer 21

Bilateral: Extension of spine
Unilateral: Contralateral rotation of spine

Question 22

Origin of the Multifidus

Answer 22

Sacrum, ilium, transverse processes of vertebrae

Question 23

Insertion of the Multifidus

Answer 23

Spinous processes of adjacent superior vertebrae

Question 24

Action of the Multifidus

Answer 24

Bilateral: Extension of spine
Unilateral: Contralateral rotation of spine

Question 25

Origin of Rotatores

Answer 25

Transverse processes

Question 26

Insertion of Rotatores

Answer 26

Spinous processes of adjacent superior vertebrae

Question 27

Action of Rotatores

Answer 27

Bilateral: Extension of spine Unilateral: Contralateral rotation of spine

Question 28

Origin of Levatores Costarum

Answer 28

Transverse processes of C7-T11

Question 29

Insertion of Levatores Costarum

Answer 29

Rib below vertebrae of origin, near rib’s tubercle

Question 30

Action of Levatores Costarum

Answer 30

Elevate ribs

Question 31

Origin of Interspinales

Answer 31

Run between spinous processes of contiguous vertebrae

Question 32

Insertion of interspinales

Answer 32

Run between spinous processes of contiguous vertebrae

Question 33

Action of Interspinales

Answer 33

Weak extension of spine

Question 34

Origin of Intertransversarii

Answer 34

Run between transverse processes of contiguous vertebrae

Question 35

Insertion of Intertransversarii

Answer 35

Run between transverse processes of contiguous vertebrae

Question 36

Action of Intertransversarii

Answer 36

Weak lateral flexion of spine

Question 37

Origin of Obliquus capitis inferior

Answer 37

Spinous process of axis (C2)

Question 38

Insertion of Obliquus capitis inferior

Answer 38

Transverse proceess of atlas (C1)

Question 39

Action of Obliquus capitis inferior

Answer 39

Bilateral: Extension of head at atlantoocciplital joint Unilateral: Ipsilateral rotation of heat at atlantoaxial joint

Question 40

Origin of Rectus capitis posterior major

Answer 40

Spinous processes of axis (C2)

Question 41

Insertion of Rectus capitis posterior major

Answer 41

Occipital bone on lateral part of inferior nuchal line

Question 42

Action of Rectus capitis posterior major

Answer 42

Bilateral: Extension of heat at atlantooccipital joint Unilateral: Ipsilateral rotation of head at atlantoaxial joint

Question 43

Origin of Rectus Captitis posterior minor

Answer 43

Posterior tubercle of atlas (C1)

Question 44

Insertion of Rectus capitis posterior minor

Answer 44

Occipital bone on medial part of inferior nuchal line

Question 45

Action of Rectus capitis posterior minor

Answer 45

Bilateral: Extension of head at atlantooccipital joint Unilateral: Ipsilateral rotation of head at atlantoaxial joint

Question 46

Origin of Obliquus capitis superior

Answer 46

Transverse process of atlas (C1)

Question 47

Insertion of Obliquus capitis superior

Answer 47

Occipital bone between superior and inferior nuchal lines

Question 48

Action of Obliquus capitis superior

Answer 48

Bilateral: Extension of head at atlantooccipital joint Unilateral: Ipsilateral rotation of head at atlantoaxial joint