Muscles Week 4 Flashcards

Suboccipitals & Suprahyoid Muscles

1
Q

What is the origin of Rectus Capitis Major

A

SP of C2

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2
Q

What is the insertion of Rectus Capitis Major

A

Lateral portion of the inferior nuchal line

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3
Q

What is the action of Rectus Capitis Major

A

Extension, Ipsilateral rotation & lateral flexion of the head

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4
Q

What is the innervation of Rectus Capitis Major

A

Suboccipital Nerve

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5
Q

What is the origin of Rectus Capitis Minor

A

Posterior Tubercle of C1

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6
Q

What is the Insertion of Rectus Capitis Minor

A

Medial portion of inferior nuchal line

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7
Q

What is the action of Rectus Capitis Minor

A

extension, ipsilateral lateral flexion of the head

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8
Q

What is the innervation of Rectus Capitis Minor

A

Suboccipital Nerve

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9
Q

What is the Origin of Obliquus Capitis Superior

A

TP of C1

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10
Q

What is the insertion of Obliquus Capitis Superior

A

Below inferior nuchal line

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11
Q

What is the action of Obliquus Capitis Superior

A

Extension, Ipsilateral rotation & lateral flexion of the head

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12
Q

What is the innervation of Obliquus Capitis Superior

A

Suboccipital nerve

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13
Q

What is the origin of Obliquus Capitis Inferior?

A

SP of C2

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14
Q

What is the insertion of Obliquus Capitis Inferior?

A

TP of C1

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15
Q

What is the action of Obliquus Capitis Inferior?

A

Extension, ipsilateral rotation of the head

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16
Q

What is the innervation of Obliquus Capitis Inferior?

A

Suboccipital nerve

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17
Q

What is the origin of Digastric? (Posterior Belly)

A

Mastoid Process

18
Q

What is the origin of Digastric? (Anterior Belly)

A

Digastric Fossa of Mandible

19
Q

What is the insertion of Digastric? (both bellies)

A

Hyoid Bone

20
Q

What is the Action of Digastric?

A

Elevation of Hyoid Bone & Depression of Mandible (Stabilizes Hyoid Bone Infrahyoid Action)

21
Q

What is the innervation of Digastric (Posterior Belly)

A

Facial Nerve CN VII

22
Q

What is the innervation of Digastric (Anterior Belly)

A

Trigemenial Nerve CN V

23
Q

What is the origin of Stylohyoid?

A

Styloid Process

24
Q

What is the insertion of Stylohyoid?

A

Hyoid Bone

25
Q

What is the action of Stylohyoid?

A

Elevation of Hyoid “Swallowing” (stabilizes hyoid bone for infrahyoid action)

26
Q

What is the innervation of Stylohyoid?

A

Facial Nerve CN VII

27
Q

What is the origin of Geniohyoid?

A

Inner surface of mandible

28
Q

What is the insertion of GenioHyoid?

A

Hyoid Bone

29
Q

What is the Action of Geniohyoid?

A

Elevation of hyoid bone. (Depression of Mandible)

30
Q

What is the innervation of Geniohyoid?

A

Hypoglossal Nerve CN XII

31
Q

What is the origin of Mylohyoid?

A

Inner surface of mandible

32
Q

What is the insertion of Mylohyoid?

A

Hyoid bone

33
Q

What is the action of Mylohyoid?

A

Elevation of hyoid bone. (Depression of mandible when hyoid is fixed)

34
Q

What is the innervation of Mylohyoid?

A

Trigimenial nerve CN V

35
Q
A

Rectus Capitis Major

36
Q
A

Rectus Capitis Minor

37
Q
A

Obliquus Capitis Superior

38
Q
A

Obliquus Capitis Inferior

39
Q
A

Digastric

40
Q
A

Stylohyoid

41
Q
A

Geniohyoid

42
Q
A

Mylohyoid