Final Exam Suboccipital musculature

Question 1

What muscles are included in the suboccipital muscle group?

Answer 1

rectus capitis posterior major, rectus capitis posterior minor, obliquus capitis inferior and obliquus capitis superior

Question 2

Which suboccipital muscle lacks an attachment to the skull?

Answer 2

obliquus capitis inferior

Question 3

Which nerve will innervate all suboccipital muscles?

Answer 3

the dorsal ramus of C1, the suboccipital nerve

Question 4

What is the origin of the rectus capitis posterior major?

Answer 4

the spinous tubercle of C2

Question 5

Contraction of rectus capitis posterior major will result in what movements?

Answer 5

turns the face to the side, bilaterally acts to extend the head

Question 6

What is the origin of the rectus capitis posterior minor?

Answer 6

the posterior tubercle of the posterior arch of C1

Question 7

Contraction of rectus capitis posterior minor will result in what movement?

Answer 7

extends the head

Question 8

What is the origin of the obliquus capitis inferior?

Answer 8

C2 spinous process and lamina

Question 9

What is the insertion of the obliquus capitis inferior?

Answer 9

transverse process of C1

Question 10

Contraction of obliquus capitis inferior will result in what movement?

Answer 10

turns the face to the side

Question 11

What is the origin of the obliquus capitis superior?

Answer 11

the posterior tubercle of the transverse process of C1

Question 12

What is the insertion of the obliquus capitis superior?

Answer 12

between superior nuchal line and inferior nuchal line

Question 13

Contraction of obliquus capitis superior will result in what movements?

Answer 13

lateral flexion/lateral bending of the head, bilaterally acts to extend the head

Question 14

An increase in the density of muscle spindles is most apparent in which suboccipital muscle?

Answer 14

obliquus capitis inferior

Question 15

Suboccipital muscle feedback relays to what additional locations in the brain?

Answer 15

extraocular nuclei of origin, primary visual cortex and vestibular nuclei

Question 16

What is the result of communication between suboccipital muscles, visual centers and vestibular centers?

Answer 16

coordination of head and eye position

Question 17

What is the proposed function of the suboccipital muscle group?

Answer 17

postural stabilizers of the atlanto-occipital and atlanto-axial joints

Question 18

Which suboccipital muscles are known to attach to dura mater?

Answer 18

rectus capitis posterior major, rectus capitis posterior minor and obliquus capitis inferior