Muscles

Question 1

Trapezius

Answer 1

INNERVATION:

spinal accessory nerve, C1-C5 cord levels

Question 2

Latissimus dorsi

Answer 2

INNERVATION:

Thoracodorsal nerve, ventral rami C6-C8

Question 3

Levator scapulae

Answer 3

INNERVATION:

Dorsal scapular nerve, ventral ramus C5 plus ventral rami C3, C4

Question 4

Rhomboid major

Answer 4

INNERVATION:

Dorsal scapular nerve, ventral ramus C5 plus ventral ramus C4

Question 5

Rhomboid minor

Answer 5

INNERVATION:

Dorsal scapular nerve, ventral ramus C5 plus ventral ramus C4

Question 6

Anterior Scalene
Middle Scalene
Posterior Scalene

Answer 6

INNERVATIONS:
Ant - ventral rami C2-C6
Mid - Ventral rami C3-C8
Post - Ventral rami C6-C8

Question 8

Splenius Capitis

Answer 8

INNERVATION:
Dorsal rami C3-C5
ACTION:
Laterally flex head & neck; rotate face to side; bilaterally extend head

Question 9

Splenius cervicis

Answer 9

INNERVATION:
Dorsal rami C5-C7
ACTION:
Laterally flex & neck; rotate neck; bilaterally extend neck

Question 10

Iliocostalis Lumborum

Answer 10

INNERVATION:
Dorsal rami lower T, all L
ACTION:
Extension, lateral flexion, rotation of L spine; lateral movement of pelvis

Question 11

Iliocostalis Thoracis

Answer 11

INNERVATION:
Dorsal rami T1-T6
ACTION:
Extension, lateral flexion T spine

Question 12

Iliocostalis Cervicis

Answer 12

INNERVATION:
Dorsal rami T1, T2; rarely C8
ACTION:
Extension, lateral flexion, rotation of L spine; lateral movement of pelvis

Question 14

Longissimus Cervicis

Answer 14

INNERVATION:
Dorsal rami C4-C8; T1-T2
ACTION:
Lateral flexion of neck; bilaterally extend neck

Question 15

Longissimus Capitis

Answer 15

INNERVATION:
Dorsal rami C1-C3, sometimes C4
ACTION:
Rotate and laterally flex head; bilaterally extend neck

Question 16

Spinalis Thoracis

Answer 16

INNERVATION:
Dorsal rami T & upper L
ACTION:
Extend T spine

Question 17

Spinalis Cervicis

Answer 17

INNERVATION:
Dorsal rami C
ACTION:
Lateral flexion & neck; rotation of C spine; bilaterally extend neck

Question 18

Spinalis Capitis

Answer 18

INNERVATION:
dorsal rami lower C, Upper T
ACTION:
Lateral flexion & neck; rotation of head; bilaterally extend head

Question 19

Semispinalis Thoracis

Answer 19

INNERVATION:
Dorsal rami T1-T6
ACTION:
Extension, rotation, & lateral flexion of upper T & lower C spine; bilaterally extend spine

Question 20

Semispinalis cervicis

Answer 20

INNERVATION:
Dorsal rami C6-C8
ACTION:
Extension, rotation and lateral flexion of C spine; bilaterally extend neck

Question 21

Semispinalis capitis

Answer 21

INNERVATION:
Dorsal rami C1-C6
ACTION:
Turns face to side; bilaterally extends head (neck inadvertently)

Question 22

Multifidus

Answer 22

INNERVATION:

Dorsal rami C3-C8, T1-T12, L1-L5, sometimes S1

Question 24

Rectus Capitis posterior Major

Answer 24

INNERVATION:
Suboccipital Nerve, dorsal ramus C1
ACTION:
Turns face to side; bilaterally extends head

Question 25

Obliquus Capitis Superior

Answer 25

INNERVATION:
Suboccipital nerve, dorsal ramus C1
ACTION:
Lateral flexion of head; bilaterally extends head

Question 26

Obliquus Capitis Inferior

Answer 26

INNERVATION:
Suboccipital nerve, dorsal ramus C1
ACTION:
Turns face to side

Question 27

Quadratus lumborum

Answer 27

INNERVATION:
Ventral rami T12, L1-L3 or L4
ACTION:
Steadies origin of diaphragm; when pelvis is fixed, it will flex L spine; bilaterally extends L spine; stabilizes & depresses 12th rib

Question 28

Serratus posterior superior

Answer 28

INNERVATION: ACTION:

Question 29

Serratus Posterior Inferior

Answer 29

INNERVATION: Intercostal nerves, ventral rami T9-T11; Subcostal nerves, ventral ramus T12 ACTION: Elevates upper 5 ribs in inspiration

Question 30

Longus Colli

Answer 30

INNERVATION: Ventral rami C2-C6, sometimes C7 ACTION: Flexion and extension of neck; rotation to the contralateral side

Question 31

Longus capitis

Answer 31

INNERVATION: Ventral rami C1-C3 ACTION: Flex the head

Question 32

Rectus capitis anterior

Answer 32

INNERVATION: Ventral rami C1, C2 ACTION: Flex the head

Question 33

Rectus capitis lateralis

Answer 33

INNERVATION: Ventral rami C1, C2 ACTION: Laterally flex head to ipsilateral side

Question 34

Rectus Capitis Posterior Minor

Answer 34

INNERVATION: Suboccipital nerve, dorsal ramus C1 ACTION: Extends head

Question 35

Longissimus Thoracis

Answer 35

INNERVATION: Dorsal rami T & L nerves ACTION: Lateral flexion T spine & ribs (L spine inadvertently); bilaterally act in extension of T & L spine, hold T & L spine erect (increases L lordosis); lateral movement of pelvis