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Question 1

Trapezius M:
Insertion, action, and innervation
Blood supply

Answer 1

1. Clavicle, Acromion and Scapular Spine
2. Action: Extend the neck, laterally flex the neck, and rotate the face away when working unilaterally.
3. Innervation: CN11 and Sensory: C3, C4
4. Transverse cervical artery

Question 2

Latissimus Dorsi M.
Location, action, innervation
Blood supply

Answer 2

1.Floor of the Humeral Groove, spine, Iliac Crest.
2. Extend, ADduct, and medially rotate the humerus
Rotate the Glenoid Cavity inferiorly.
3. Thoracodorsal N. (C6-8)
4. Thoracodorsal A.

Question 3

Location of Rhomboid Major M.

Answer 3

Spine and scapula

Question 4

Action of Rhomboid Major M. (2)

Answer 4

Retract and Elevate scapula

Rotate the Glenoid Cavity inferiorly

Question 5

Innervation and Blood supply Rhomboid Major M.

Answer 5

Dorsal Scapular N. (C4,5)

Dorsal Scapular A.

Question 6

Location of Rhomboid Minor M.

Answer 6

Between Spine and medial border scapula

Question 7

Action of Rhomboid Minor M.(2)

Answer 7

Retract and Elevate Scapula, Rotate the glenoid Cavity inferiorly.

Question 8

Innervation and Blood supply of Rhomboid Minor M.

Answer 8

Dorsal Scapular N. (C4,5)

Dorsal Scapular A.

Question 9

Location of Levator Scapulae M

Answer 9

Scapula and Transverse Process of C1-4

Question 10

Action of Levator Scapulae M (3)

Answer 10

Elevate scapula, rotate the glenoid cavity inferiorly.

Extend and laterally flex the neck (when the scapula is fixed).

Question 11

Innervation and blood supply of Levator Scapulae M

Answer 11

Dorsal Scapular N. (C3,4,5)

Dorsal Scapular A.

Question 12

Location of Serratus Posterior Superior M.

Answer 12

Ribs and Spinous Processes.

Question 13

Action of Serratus Posterior Superior M.

Answer 13

Elevate Ribs with forced inspiration

Question 14

Innervation and blood supply of Serratus Posterior Superior M.

Answer 14

Intercostal N(2-5)
Intercostal A.

Question 15

Location of Serratus Posterior Inferior M.

Answer 15

Ribs and Spinous Processes

Question 16

Action of Serratus Posterior Inferior M.

Answer 16

Depress Ribs with forced expiration

Question 17

Innervation and blood supply of Serratus Posterior Inferior M.

Answer 17

Anterior Rami T9-12.

Intercostal A.

Question 18

Location of Splenius Capitus M.

Answer 18

Temporal B, Occipital B, Spinous Process C7-T3

Question 19

Action of Splenius Capitus M. (2)

Answer 19

Extend the neck when working bilaterally

Laterally flex the neck and rotate face toward when working unilaterally.

Question 20

Innervation and blood supply of Splenius Capitus M.

Answer 20

Posterior Rami (C3-5)
Muscular branches of Aorta.

Question 21

Location of Splenius Cervicis M.

Answer 21

below Splenius Capitus M

Question 22

Action of Splenius Cervicis M. (2)

Answer 22

Extend the neck when working bilaterally.

Laterally flex the neck and rotate face toward when working unilaterally.

Question 23

Innervation and blood supply of Splenius Cervicis M.

Answer 23

Posterior Rami (C5-7)
Occipital A. and Transverse Cervical A.

Question 24

What are the 3 main muscles of the Erector Spine Group?

What are their actions? (2)

Answer 24

1. Iliocostalis
2. Longissimus
3. Spinalis
   Action: maintain erect posture and extend the vertebral column and head when working bilaterally; laterally flex the vertebral column when working unilaterally.

Question 25

Innervation of all Erector Spinae Group M.

Answer 25

Posterior Rami

Question 26

Action of Semispinalis Thoracis M.

Answer 26

Extend Spine and rotate spine away.

Question 27

Innervation of Semispinalis Thoracis M.

Answer 27

Posterior Rami

Question 28

Enumerate the muscles of Tranversospinalis Group

Answer 28

1. Semispinalis Group 2. Multifidus M. 3. Rotatores Longus M. 4. Rotatores Brevis M.

Question 29

Semispinalis Cervicis M Action

Answer 29

Extend Spine and Rotate spine away.

Question 30

Innervation of semispinalis cervicis M.

Answer 30

Posterior Rami

Question 31

Action of Semispinalis Capitis M.

Answer 31

Extend head, rotate face away.

Question 32

Innervation of Semispinalis Capitis M

Answer 32

posterior Rami

Question 33

Action of Multifidus M

Answer 33

Extend spine, rotate the spine away.

Question 34

Innervation of Multifidus M.

Answer 34

Posterior Rami

Question 35

Action of Rotatores Longus M

Answer 35

Extend spine, rotate the spine away

Question 36

Innervation of Rotatores Longus M

Answer 36

Posterior Rami

Question 37

Action of Rotatores Brevis M

Answer 37

Extend spine, rotate the spine away.

Question 38

Innervation of Rotatores Brevis M

Answer 38

Posterior Rami

Question 39

Action of Interspinalis M

Answer 39

Extend Spine

Question 40

Innervation of Interspinalis M

Answer 40

Posterior Rami

Question 41

Action of Intertransversarii M

Answer 41

Laterally Flex Spine

Question 42

Innervation of Intertransversarii M

Answer 42

Posterior/ Anterior Rami

Question 43

Action of Rectus Capitis Posterior Major M.

Answer 43

Extend head, rotate face toward

Question 44

Innervation of Rectus Capitis Posterior Major M.

Answer 44

Suboccipital N.

Question 45

Action of Rectus Capitis Posterior Minor M

Answer 45

Extend head

Question 46

Innervation of Rectus Capitis Posterior Minor M

Answer 46

Suboccipital N

Question 47

Action of Obliquus Capitis Inferior M

Answer 47

Rotate the face toward

Question 48

Innervation of Obliquus Capitis Inferior M

Answer 48

Suboccipital N

Question 49

Action of Obliquus Capitis Superior M

Answer 49

Extend and laterally flex head

Question 50

Innervation of Obliquus Capitis Superior M

Answer 50

Suboccipital N