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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
Q

What is the origin of the Lateral pterygoid muscle?

A

Lateral side of lateral pterygoid plate of sphenoid bone

26
Q

What is the insertion of the Lateral pterygoid muscle?

A

Condyle of the mandible

27
Q

What is the action of the Lateral pterygoid muscle?

A

Depress mandible, protract mandible, move mandible side-to-side

28
Q

What is the innervation of the Lateral pterygoid muscle?

A

Mandibular division of Trigeminal nerve (CN V3)

29
Q

What is the origin of the Trapezius muscle?

A

Superior nuchal line, external occipital protuberance, ligamentum nuchae

30
Q

What is the insertion of the Trapezius muscle?

A

Lateral 1/3 of clavicle, acromion, spine of scapula

31
Q

What is the action of the Trapezius muscle?

A

Elevate scapula, retract scapula, depresses scapula

32
Q

What is the innervation of the Trapezius muscle

A

Accessory nerve (CN XI)

33
Q

What is the origin of the Sternocleidomastoid muscle?

A

Manubrium of the sternum and medial third of the clavicle

34
Q

What is the insertion of the Sternocleidomastoid muscle?

A

Mastoid process

35
Q

What is the action of the Sternocleidomastoid muscle?

A

Bilaterally:
Flex cervical portion of vertebral column
Unilaterally:
Rotate head to opposite side

36
Q

What is the innervation of the Sternocleidomastoid muscle?

A

Accessory nerve (CN XI)

37
Q

What is the origin and insertion of the Mylohyoid muscle?

A

Superior to hyoid bone

38
Q

What is the action of the Mylohyoid muscle?

A

Elevate the hyoid bone

39
Q

What is the origin and insertion of the Digastric muscle?

A

Superior to hyoid bone

40
Q

What is the action of the Digastric muscle?

A

Elevate the hyoid bone

41
Q

What is the origin and insertion of the Stylohyoid muscle?

A

Superior to hyoid bone

42
Q

What is the action of the Stylohyoid muscle?

A

Elevate the hyoid bone

43
Q

What is the origin and insertion of the Geniohyoid muscle?

A

Superior to hyoid bone

44
Q

What is the action of the Geniohyoid muscle?

A

Elevate the hyoid bone

45
Q

What is the origin and insertion of the Omohyoid?

A

Inferior to hyoid bone

46
Q

What is the action of the Omohyoid muscle?

A

Depress the hyoid bone

47
Q

What is the origin and insertion of the Sternohyoid?

A

Inferior to hyoid bone

48
Q

What is the action of the Sternohyoid?

A

Depress the hyoid bone

49
Q

What is the origin and insertion of the Thyrohyoid?

A

Inferior to hyoid bone

50
Q

What is the action of the Thyrohyoid?

A

Depress the hyoid bone

51
Q

What is the origin and insertion of the Sternothyroid?

A

Inferior to hyoid bone

52
Q

What is the action of the Sternothyroid?

A

Depress the hyoid bone

53
Q

What is the origin of the Styloglossus muscle?

A

Styloid process

54
Q

What is the action of the Styloglossus muscle?

A

Pulls the tongue posteriorly and superiorly

55
Q

What is the innervation of the Styloglossus muscle?

A

Hypoglossal nerve (CN XII)

56
Q

What is the origin of the Hyoglossus muscle?

A

Hyoid bone

57
Q

What is the action of the Hyoglossus muscle?

A

Pulls the tongue down (depression)

58
Q

What is the innervation of the Hyoglossus muscle?

A

Hypoglossal nerve (CN XII)

59
Q

What is the origin of the Genioglossus muscle?

A

Genomic tubercle of the mandible

60
Q

What is the action of the Genioglossus muscle?

A

Pulls the tongue out of the mouth (protrudes)

Anatomy 3300: Unit 4 (5 decks)

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