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Anatomy 3300: Unit 4 > Unit 4 Muscles Table > Flashcards

Unit 4 Muscles Table Flashcards

1
Q

What is the action of the Frontalis muscle?

A

Draw scalp anteriorly, raise eyebrows, wrinkle forehead

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2
Q

What is the innervation of the Frontalis muscle?

A

Facial nerve (CN VII)

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3
Q

What is the action of the Occipitalis muscle?

A

Draw scalp posteriorly

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4
Q

What is the innervation of the Occipitalis muscle?

A

Facial nerve (CN VII)

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5
Q

What is the action Orbicularis oculi muscle?

A

Close the eye

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6
Q

What is the innervation of the Orbicularis oculi muscle?

A

Facial nerve (CN VII)

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7
Q

What is the action of the Orbicularis oris muscle?

A

Close lips, protrude lips

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8
Q

What is the innervation of the Orbicularis oris muscle?

A

Facial nerve (CN VII)

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9
Q

What is the action of the Buccinator muscle?

A

Press teeth against cheek

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10
Q

What is the innervation of the Buccinator muscle?

A

Facial nerve (CN VII)

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11
Q

What is the action of the Platysma muscle?

A

Tense skin of neck, draw part of lower lip inferiorly and posteriorly

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12
Q

What is the innervation of the Platysma muscle?

A

Facial nerve (CN VII)

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13
Q

What is the origin of the Masseter muscle?

A

Zygomatic arch

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14
Q

What is the insertion of the Masseter muscle?

A

Ramus of mandible and coronoid process

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15
Q

What is the action of the Masseter muscle?

A

Elevate mandible

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16
Q

What is the innervation of the Masseter muscle?

A

Mandibular division of Trigeminal nerve (CN V3)

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17
Q

What is the origin of the Temporalis muscle?

A

Floor of the temporal fossa

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18
Q

What is the insertion of the Temporalis muscle?

A

Coronoid process of the mandible

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19
Q

What is the action of the Temporalis muscle?

A

Elevate mandible, retract mandible

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20
Q

What is the innervation of the Temporalis muscle?

A

Mandibular division of Trigeminal nerve (CN V3)

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21
Q

What is the origin of the Medial pterygoid muscle?

A

Medial side of lateral pterygoid plate of sphenoid bone

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22
Q

What is the insertion of the Medial pterygoid muscle?

A

Angle of the mandible

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23
Q

What is the action of the Medial pterygoid muscle?

A

Elevate mandible, protract mandible, move mandible side-to-side

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24
Q

What is the innervation of the Medial pterygoid muscle?

A

Mandibular division of Trigeminal nerve (CN V3)

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25
What is the origin of the Lateral pterygoid muscle?
Lateral side of lateral pterygoid plate of sphenoid bone
26
What is the insertion of the Lateral pterygoid muscle?
Condyle of the mandible
27
What is the action of the Lateral pterygoid muscle?
Depress mandible, protract mandible, move mandible side-to-side
28
What is the innervation of the Lateral pterygoid muscle?
Mandibular division of Trigeminal nerve (CN V3)
29
What is the origin of the Trapezius muscle?
Superior nuchal line, external occipital protuberance, ligamentum nuchae
30
What is the insertion of the Trapezius muscle?
Lateral 1/3 of clavicle, acromion, spine of scapula
31
What is the action of the Trapezius muscle?
Elevate scapula, retract scapula, depresses scapula
32
What is the innervation of the Trapezius muscle
Accessory nerve (CN XI)
33
What is the origin of the Sternocleidomastoid muscle?
Manubrium of the sternum and medial third of the clavicle
34
What is the insertion of the Sternocleidomastoid muscle?
Mastoid process
35
What is the action of the Sternocleidomastoid muscle?
Bilaterally: Flex cervical portion of vertebral column Unilaterally: Rotate head to opposite side
36
What is the innervation of the Sternocleidomastoid muscle?
Accessory nerve (CN XI)
37
What is the origin and insertion of the Mylohyoid muscle?
Superior to hyoid bone
38
What is the action of the Mylohyoid muscle?
Elevate the hyoid bone
39
What is the origin and insertion of the Digastric muscle?
Superior to hyoid bone
40
What is the action of the Digastric muscle?
Elevate the hyoid bone
41
What is the origin and insertion of the Stylohyoid muscle?
Superior to hyoid bone
42
What is the action of the Stylohyoid muscle?
Elevate the hyoid bone
43
What is the origin and insertion of the Geniohyoid muscle?
Superior to hyoid bone
44
What is the action of the Geniohyoid muscle?
Elevate the hyoid bone
45
What is the origin and insertion of the Omohyoid?
Inferior to hyoid bone
46
What is the action of the Omohyoid muscle?
Depress the hyoid bone
47
What is the origin and insertion of the Sternohyoid?
Inferior to hyoid bone
48
What is the action of the Sternohyoid?
Depress the hyoid bone
49
What is the origin and insertion of the Thyrohyoid?
Inferior to hyoid bone
50
What is the action of the Thyrohyoid?
Depress the hyoid bone
51
What is the origin and insertion of the Sternothyroid?
Inferior to hyoid bone
52
What is the action of the Sternothyroid?
Depress the hyoid bone
53
What is the origin of the Styloglossus muscle?
Styloid process
54
What is the action of the Styloglossus muscle?
Pulls the tongue posteriorly and superiorly
55
What is the innervation of the Styloglossus muscle?
Hypoglossal nerve (CN XII)
56
What is the origin of the Hyoglossus muscle?
Hyoid bone
57
What is the action of the Hyoglossus muscle?
Pulls the tongue down (depression)
58
What is the innervation of the Hyoglossus muscle?
Hypoglossal nerve (CN XII)
59
What is the origin of the Genioglossus muscle?
Genomic tubercle of the mandible
60
What is the action of the Genioglossus muscle?
Pulls the tongue out of the mouth (protrudes)

Anatomy 3300: Unit 4 (5 decks)

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