Muscles of the Neck ( Module 4 )

Question 1

SCM - Innervation

Answer 1

Spinal Accessory Nerve (CN XI) C2,3

Question 2

SCM - Origin

Answer 2

Sternal Head:
Top of the manubrium

Clavicular Head:
Medial 1/3 of the clavicle

Question 3

SCM - Insertion

Answer 3

Mastoid process of the temporal bone
Lateral portion of the superior nuchal line of the occiput

Question 4

SCM - Actions

Answer 4

Unilaterally:
LATERALLY FLEX the head and neck to the SAME side
ROTATE the head and neck to the OPPOSITE side

Bilaterally:
FLEX the neck
Assist to ELEVATE the ribcage during inhalation

Question 5

Scalenes - Innervation

Answer 5

C3-8

Question 6

Scalenes - Origin

Answer 6

ANTERIOR:
transverse process of C3-C6

MIDDLE:
transverse process of C2-C7

POSTERIOR:
transverse process of C6-C7

Question 7

Scalenes - Insertion

Answer 7

ANTERIOR:
1st rib

MIDDLE:
1st rib

POSTERIOR:
2nd rib

Question 8

Scalenes - Actions

Answer 8

Unilaterally:
LATERALLY FLEX the head and neck to the SAME side (all 3)
ROTATE the head and neck to the OPPOSITE side (all 3)

Bilaterally:
FLEX the head and neck (anterior only)
ELEVATE the ribs during inhalation (all 3)

Question 9

SIN # to remember for scalenes

Answer 9

136 127 267

Question 10

Levator Scapulae - Innervation

Answer 10

Cervical and dorsal scapular nerves

Question 11

levator Scapulae - Origin

Answer 11

transverse process of C1 - C4

Question 12

Levator Scapulae - Insertion

Answer 12

Medial border of the scapula between the superior angle and the superior portion of the spine of the scapula

Question 13

Levator Scapula - Actions

Answer 13

Unilaterally:
ELEVATE the scapula
DOWNWARDLY ROTATE the scapula
LATERALLY FLEX the head and neck to the SAME side
ROTATE the head and neck to the SAME side

Bilaterally:
EXTEND the head and neck

Question 14

Splenius Capitus - Innervation

Answer 14

Cervical nerve

Question 15

Splenius capitus - Origin

Answer 15

Inferior 1/2 of the ligamentum nuchae
Spinous process of C7 - T4

Question 16

Splenius Capitus - Insertion

Answer 16

Mastoid process
Lateral portion of the superior nuchal line

Question 17

Splenius capitus - Actions

Answer 17

Unilaterally:
ROTATE the head and neck to the SAME side
LATERALLY FLEX the head and neck to the SAME side

Bilaterally:
EXTEND the head and neck

Question 18

Splenius Cervicis - Innervation

Answer 18

Cervical Nerve

Question 19

Splenius Cervicis - Origin

Answer 19

Spinous processes of T3 - T6

Question 20

Splenius Cervicis - Insertion

Answer 20

Transverse processes of C1 - C3

Question 21

Splenius Cervicis - Actions

Answer 21

Unilaterally:
ROTATE the head and neck to the SAME side
LATERALLY FLEX the head and neck to the SAME side

Bilaterally:
EXTEND the head and neck

Question 22

Pectoralis Minor - Innervation

Answer 22

Medial pectoral nerve, with fibers from a communicating branch of the lateral pectoral nerve

Question 23

Pectoralis Minor - Origin

Answer 23

Third, fourth, and fifth ribs

Question 24

Pectoralis Minor - Insertion

Answer 24

Medial surface of the coracoid process of the scapula

Question 25

Pectoralis Minor - Actions

Answer 25

DEPRESS the scapula (scapulothoracic joint) ABDUCT/PROTRACT the scapula (scapulothoracic joint) DOWNWARDLY ROTATE the scapula (scapulothoracic joint) With the scapula fixed: Assist to ELEVATE the thorax during forced inhalation

Question 26

Longus Colli - Innervation

Answer 26

C2-7

Question 27

Longus Colli - Origin

Answer 27

Bodies of C5 - T3 Transverse processes of C3 - C5

Question 28

Longus Colli - Insertion

Answer 28

Tubercle on anterior arch of the atlas Bodies of the axis, C3 - C4 Transverse processes of C5 - C6

Question 29

Longus Colli - Actions

Answer 29

Unilaterally: LATERALLY FLEX the head and neck to the SAME side ROTATE the head and neck to the SAME side Bilaterally: FLEX the head and neck

Question 30

Suboccipitals - Name them

Answer 30

Rectus Capitis Posterior Major Rectus Capitis Posterior Minor Oblique Capitis Superior Oblique Capitis Inferior

Question 31

Suboccipitals - Innervation

Answer 31

Suboccipital Nerve (all 4)

Question 32

RCP Major - Origin

Answer 32

Spinous process of the axis (C2)

Question 33

RCP Minor - Origin

Answer 33

Tubercle of the posterior arch of the atlas (C1)

Question 34

OCS - Origin

Answer 34

Transverse process of the atlas (C1)

Question 35

OCI - Origin

Answer 35

Spinous process of the axis (C2)

Question 36

RCP Major - Insertion

Answer 36

Inferior nuchal line of the occiput

Question 37

RCP Minor - Insertion

Answer 37

Inferior nuchal line of the occiput

Question 38

OCS - Insertion

Answer 38

between the nuchal lines of the occiput

Question 39

OCI - Insertion

Answer 39

Transverse process of the atlas (C1)

Question 40

Suboccipitals - Actions

Answer 40

RCP Major, RCP MInor, OCS: ROCK & TILT the head back into extension RCP Major, OCI: ROTATE the head to the SAME side OCS: LATERALLY FLEX the head to the same side

Question 41

Which suboccipitals rock and tilt the head back into extension?

Answer 41

RCP Major RCP Minor OCS

Question 42

Which suboccipitals rotate the head and neck to the same side?

Answer 42

RCP Major OCI

Question 43

Which suboccipitals laterally flex the head to the same side?

Answer 43

OCS

Question 44

Pectoralis Major - Actions

Answer 44

ADDUCT glenohumeral MEDIALLY ROTATE glenohumeral Assist to elevate thorax during forced inhalation Upper fibers: FLEX glenohumeral HORIZONTALLY ADDUCT glenohumeral Lower fibers: EXTEND glenohumeral

Question 45

Pectoralis Major - Innervation

Answer 45

Medial and lateral pectoral nerves

Question 46

Pectoralis Major - Origin

Answer 46

Medial half of clavicle Sternum Cartilage of ribs 1-6

Question 47

Pectoralis major - insertion

Answer 47

Crest of greater tubercle of humerus

Question 48

OCI - actions

Answer 48

Rotate same side

Question 49

OCS - actions

Answer 49

Extend head Laterally flex head

Question 50

RCP major - actions

Answer 50

Extend Rotate same side

Question 51

RCP minor - actions

Answer 51

Extend