Deep Back Muscles

Question 1

Splenius Capitis Origin

Answer 1

Lower 1/2 of nuchae lig.
SP of C7-T4 and their supraspinous lig.

Question 2

Splenius Capitis Insertion

Answer 2

Mastoid process
rough surface below lateral 1/3 of superior nuchal line

Question 3

Splenius Capitis Innervation

Answer 3

Lateral Branches of Dorsal Rami of middle cervical spinal n.

Question 4

Splenius Capitis Blood Supply

Answer 4

Branches off external carotid a.

Question 5

Splenius Capitis Action

Answer 5

Uni: Ipsilateral side bend and rotation of neck
Bi: Neck extension

Question 6

Splenius Cervicis Origin

Answer 6

SP of T3-T6

Question 7

Splenius Cervicis Insertion

Answer 7

Posterior Tubercles on TP of C1-C3

Question 8

Splenius Cervicis Innervation

Answer 8

Lateral branches of Dorsal rami of lower cervical spinal N.

Question 9

Splenius Cervicis Blood Supply

Answer 9

Branches off the external carotid a.

Question 10

Splenius Cervicis Action

Answer 10

Uni: Ipsilateral sb and rotation of neck
BI: neck extension

Question 11

Iliiocostalis cervicis Origin

Answer 11

Ribs 3-6 @ rib angles

Question 12

Iliiocostalis cervicis Insertion

Answer 12

Posterior Tubercles on TP of C4-C6

Question 13

Iliiocostalis cervicis Innervation

Answer 13

Dorsal rami of lower cervical spinal N.

Question 14

Iliiocostalis cervicis Blood Supply

Answer 14

Post B. Post.

Question 15

Iliocostalis Thoracis Origin

Answer 15

Ribs 6-12 @ rib angles

Question 16

Iliocostalis Thoracis Insertion

Answer 16

Ribs 1-6 @ rib angles
posterior portion of TP of C7

Question 17

Iliocostalis thoracis Innervation

Answer 17

Dorsal Rami of thoracic spinal N.

Question 18

Iliocostalis thoracis Blood Supply

Answer 18

Post B. Post

Question 19

Iliocostalis thoracis Action

Answer 19

Uni: Ipsi sb of spine
Bi: spine extension

Question 20

Iliocostalis cervicis Action

Answer 20

Uni: SB of spine
Bi: spine extension

Question 21

Iliocostalis lumborum Origin

Answer 21

Common tendon of median sacral crest
Medial aspect of posterior iliac crest
SP of T11-L5 and their supraspinous lig.

Question 22

Iliocostalis lumborum Insertion

Answer 22

Lower ribs 6-7 @ rib angles

Question 23

Iliocostalis lumborum Innervation

Answer 23

Dorsal rami of lumbar spinal N.

Question 24

Iliocostalis lumborum Blood supply

Answer 24

Post B. Post

Question 25

Longissimus capitis Origin

Answer 25

TP of T1-T5 Articular process of C4-C7

Question 26

Longissimus capitis Insertion

Answer 26

Mastoid process @ posterior margin

Question 27

Longissimus capitis Innervation

Answer 27

Dorsal rami of lower cervical spinal N.

Question 28

Longissimus capitis Blood supply

Answer 28

Muscular branch of occipital a. Post B. Post

Question 29

Longissimus capitis Action

Answer 29

Uni: ipsilateral rotation of head Bi: Head extension

Question 30

Longissimus cervicis Origin

Answer 30

TP of T1-T5

Question 31

Longissimus cervicis Insertion

Answer 31

Posterior Tubercles of TP of C2-C6

Question 32

Longissimus cervicis Innervation

Answer 32

Dorsal rami of cervical and thoracic spinal N.

Question 33

Longissimus cervicis Blood Supply

Answer 33

Post B. Post

Question 34

Longissimus cervicis Action

Answer 34

Uni: ipsilateral SB of head BI: Spine extension

Question 35

Longissimus thoracis Origin

Answer 35

Common tendon in lumbar region on the posterior aspect of TP of lumbar vertebrae and Middle layer of thoracolumbar fascia

Question 36

Longissimus thoracis Insertion

Answer 36

Tips of TP of T1-T12 Lower ribs 9-10 between tubercles and rib angles

Question 37

Longissimus thoracis Innervation

Answer 37

Dorsal rami of thoracic and lumbar spinal N.

Question 38

Longissimus thoracis Blood supply

Answer 38

Post B. Post

Question 39

Longissimus thoracis Action

Answer 39

Uni: ipsi sb of trunk Bi: spine extension