Spinal Muscles

Question 1

Origins of the External Abdominal Oblique (3)

Answer 1

1. Pubic Bone (pubic crest & tubercle)
2. Anterior iliac crest
3. Abdominal aponeurosis

Question 2

Insertion of the External Abdominal Oblique (1)

Answer 2

Ribs 5-12

Question 3

Functions of External Abdominal Oblique (3)

Answer 3

1. Flex trunk
2. Laterally Flex trunk
3. Contralaterally rotate trunk

Question 4

origins of Internal Abdominal Oblique (3)

Answer 4

1. thoracolumbar fascia
2. Inguinal Ligament
3. Iliac crest

Question 5

insertions of internal abdominal oblique (2)

Answer 5

1. ribs 10-12

2. abdominal aponeurosis

Question 6

functions of the internal abdominal oblique (3)

Answer 6

1. flex the trunk
2. laterally flex the trunk
3. Ipsilaterally rotate trunk

Question 7

Origin of Transverse Abdominis (4)

Answer 7

1. Lower Costal Cartilage
2. Thoracolumbar fascia
3. inguinal ligament
4. iliac crest

Question 8

Insertion of transverse abdominis (1)

Answer 8

1. abdominal aponeruosis

Question 9

Function of transverse abdominis (1)

Answer 9

compresses the abdominopelvic cavity

Question 10

Origin of rectus abdominis

Answer 10

1. pubis (the crest & symphysis)

Question 11

Insertion of rectus abdominis (2)

Answer 11

1. Xiphoid process

2. Cartilage of ribs 5-7

Question 12

Functions of rectus abdominis (2)

Answer 12

1. flexes the trunk

2. posteriorly tilts pelvis

Question 13

Multifidus origins (3)

Answer 13

1. Posterior Sacrum
2. Posterior Superior Iliac Spine
3. L4-C4 vertebrae

Question 14

Multifidus insertion (1)

Answer 14

Spinous Processes of vertebrae

Question 15

Multifidus functions (3)

Answer 15

1. Extend the trunk and neck
2. Laterally flex the trunk and spine
3. Contralaterally rotate the trunk and neck

Question 16

Rotatores origins (1 common)

Answer 16

transverse processes of vertebrae

Question 17

Rotatores insertion (1 common)

Answer 17

Lamina of vertebrae

Question 18

Rotatores functions (2)

Answer 18

1. Extend the trunk and neck

2. Contralaterally rotate trunk and neck

Question 19

Iliocostalis origin (for the entire muscle) (3)

Answer 19

1. Sacrum
2. Iliac crest
3. ribs 3-12

Question 20

Iliocostalis insertion (for entire muscle) (2)

Answer 20

1. Ribs 1-12

2. Transverse processes of C4-C7

Question 21

Iliocostalis functions (2)

Answer 21

1. Extend trunk and neck

2. Laterally flex trunk and neck

Question 22

Longissimus origins (4)

Answer 22

1. Sacrum
2. Iliac crest
3. Transverse processes of L1-L5 & T1-T5
4. Articular Processes of C5-C7

Question 23

Longissiumus insertions (3)

Answer 23

1. Ribs 4-12
2. Transverse Processes of T1-T12 & C2-C6
3. Mastoid process of temporal bone

Question 24

longissimus functions (2)

Answer 24

1. Laterally flex the trunk, neck and HEAD

2. extend the trunk, neck and HEAD

Question 25

Spinalis origins (3)

Answer 25

1. Spinous processes of T11-L2
2. Spinous Process of C7
3. Nuchal ligament

Question 26

Spinalis insertions (2)

Answer 26

1. spinous processes of T4-T8

2. Spinous process of C2

Question 27

Function of Spinalis (1)

Answer 27

Extend the neck, and trunk

Question 28

Semispinalis parts (3)

Answer 28

Capitis, cervicis, and throacis

Question 29

Semispinalis thoracisis origin

Answer 29

transverse processes of T6-T10

Question 30

Semispinalis cervicis origin

Answer 30

transverse processes of T1-T5

Question 31

Semispianlis capitis origins

Answer 31

transverse processes of C7-T6

Question 32

Semispinalis thoracisis insertion

Answer 32

Spinous processes of C6-T4

Question 33

Semispinalis cervicis insertion

Answer 33

spinous processes of C2-C5

Question 34

Semispianlis capitis insertion

Answer 34

occipital bone

Question 35

Semispinalis functions (2)

Answer 35

1. Extend the trunk and neck and HEAD (**capitis)

2. laterally flex the trunk, neck and HEAD (**capitis)

Question 36

layer 6 muscles

Answer 36

1. all parts of semispinalis
2. multifidus
3. rotatores

Question 37

layer 5 muscles

Answer 37

1. all parts of iliocostalis
2. all parts of longissimus
3. all parts of spinalis