Actions_Neck and Suboccipital

Question 1

Rectus Capitis Posterior Major

Answer 1

capital extension, rotation of head to same side, lateral bending of head to same side

Question 2

Rectus Capitis Posterior Minor

Answer 2

capital extension

Question 3

Oblique Capitis Superior

Answer 3

capital extension, lateral bending of head to same side

Question 4

Oblique Capitis Inferior

Answer 4

rotation of head to same side, lateral bending of head to same side

Question 5

Longissimus Capitis

Answer 5

capital extension, lateral bending and rotation of head to same side

Question 6

Splenius Capitis

Answer 6

capital extension, rotation of head to same side, and lateral bending of head to same side

Question 7

Semispinalis Capitis

Answer 7

capital extension, rotation of head to OPPOSITE side, lateral bending of head to SAME side

Question 8

Spinalis Capitis

Answer 8

capital extension

Question 9

Longissimus Cervicis

Answer 9

cervical extension (bilateral) and lateral bending of C spine to SAME side (unilateral)

Question 10

Semispinales Cervicis

Answer 10

cervical extension (bilateral), lateral bending of C spine to SAME side (unilateral), and rotation of C spine to opposite side (unilateral)

Question 11

Iliocostalis Cervicis

Answer 11

cervical extension (bilateral), lateral bending of cervical spine to SAME side (unilateral)

assist depression of ribs

Question 12

Splenius Cervicis

Answer 12

cervical extension (bilateral), lateral bending of C spine to SAME side (unilateral), rotation of C spine to same side (unilateral)

Question 13

Spinalis Cervicis

Answer 13

extension of C spine

Question 14

Interspinales Cervicis

Answer 14

extension of C spine

Question 15

Intertransversii Cervicis

Answer 15

cervical extension (bilateral), lateral bending of C spine to SAME side (unilateral)

Question 16

Rotatores Cervicis

Answer 16

rotation of C spine to opposite side

assist cervical extension

Question 17

Rectus Capitis Anterior

Answer 17

capital flexion, stabilization of AO joint

Question 18

Rectus Capitis Lateralis

Answer 18

lateral bending of head to same side, capital flexion, stabilization of AO joint

assist head rotation

Question 19

Longus Capitis

Answer 19

capital flexion, rotation of head to SAME side

Question 20

Mylohyoid

Answer 20

raises hyoid and tongue of swallowing, depresses mandible (with hyoid fixed)

assist capital flexion (weak)

Question 21

Stylohyoid

Answer 21

pulls hyoid up and back (in swallowing), capital flexion (weak), participates in mastication and speech

assists depression of mandible

Question 22

Geniohyoid

Answer 22

elevation and protraction of hyoid

assist capital flexion (weak) and mandible depression

Question 23

Digastric

Answer 23

mandible depression, hyoid elevation, anterior belly draws hyoid forward, posterior belly draws hyoid backward

assist capital flexion (weak synergist)

Question 24

Longus Colli

Answer 24

cervical flexion (weak), cervical rotation to OPPOSITE side, may laterally flex

Question 25

Scalenus Anterior

Answer 25

cervical flexion, elevates 1st rib in inspiration, cervical rotation to OPPOSITE side, cervical lateral bending to SAME side

Question 26

Scalenus Medius

Answer 26

cerivical flexion (weak), cervical lateral bending to SAME side, elevates 1st rib in inspiration, cervical rotation to OPPOSITE side

Question 27

Scalenus Posterior

Answer 27

cervical lateral bending to SAME side, elevates 2nd rib in inspiration, cervical rotation to OPPOSITE side

Question 28

Sternocleidomastoid

Answer 28

cervical flexion (bilateral), capital extension (bilateral), cervical lateral bending to SAME side (unilateral), rotation of head to OPPOSITE side (unilateral), raises sternum in forced inspiration

Question 29

Sternothyroid

Answer 29

cervical flexion (weak), draws larynx down, depresses hyoid, mandible, and tongue after elevation

Question 30

Thyrohyoid

Answer 30

cervical flexion, draws hyoid downward, elevates larynx and thyroid cartilage

Question 31

Sternohyoid

Answer 31

cervical flexion (weak) and depression of hyoid

Question 32

Omohyoid

Answer 32

depression of hyoid, cervical flexion

Question 33

Platysma

Answer 33

cervical flexion (weak), draws lower lip downward and back assists jaw opening and in forced inspiration