Suboccipital Muscles Flashcards

1
Q

What does Suboccipital Muscles refer to?

A

four muscles situated underneath the occipital bone which are all innervated by the suboccipital nerve.

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2
Q

What is the general area the Suboccipital muscles are located in?

A

Suboccipital compartment of the neck, deep to the sternocleidomastoid, trapezius, splenius and semispinalis muscles.

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3
Q

What is the collective function of the suboccipital muscles?

A

Extend and rotate the head

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4
Q

What is the Rectus Capitis Posterior Major?

A

Larger rectus capitis muscles located laterally to the rectus capitis posterior minor

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5
Q

What is the origin of the Rectus Capitis Posterior Major muscle?

A

C2 vertebra (the axis)

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6
Q

Where does the Rectus Capitis Posterior Major muscle insert?

A

Inferior nuchal line of the occipital bone

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7
Q

What is the function of the Rectus Capitis Posterior Major muscle?

A

Extension and rotation of the head

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8
Q

What is the Rectus Capitis Posterior Minor muscle?

A

Most medial muscle of the Suboccipital muscle which contains connective tissue between this muscle and dura matter

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9
Q

What is the origin of the Rectus Capitis Posterior Minor muscle?

A

Posterior tubercle of the C1 vertebra (the atlas)

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10
Q

What is the insertion of the Rectus Capitis Posterior Minor muscle?

A

Medial part of the inferior nuchal line of the occipital bone

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11
Q

What is the action of the Rectus Capitis Posterior Minor muscle?

A

Extension of the head

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12
Q

What is the Obliquus Capitis Inferior Muscle?

A

Most inferior Suboccipital muscle, which is also the only muscle that does not have attachments to the cranium

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13
Q

What is the origin of the Obliquus Capitis Inferior Muscle?

A

Spinous process of the C2 vertebra

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14
Q

What is the Insertion point of the Obliquus Capitis Inferior Muscle?

A

Transverse process of the C1 Vertebra

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15
Q

What is the action of the Obliquus Capitis Inferior muscle?

A

Extension and Rotation of the head

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16
Q

What is the Obliquus Capitis Superior Muscle?

A

Muscle found in the lateral aspect of the Suboccipital compartment

17
Q

What is the Origin of the Obliquus Capitis Superior Muscle?

A

Transverse process of C1

18
Q

Where does the Obliquus Capitis Superior Muscle?

A

Onto the occipital bone between the superior and inferior nuchal lines

19
Q

What is the action of the Obliquus capitis superior muscle?

A

Extension of the head