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Midterm OP (Muscles) Flashcards

1
Q

Upper Trapezius Origin

A

EOP, Nuchal Line, Nuchal Ligament

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2
Q

Middle Trapezius Origin

A

SP’s of C7-T5

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3
Q

Lower Trapezius Origin

A

SP’s of T5-T12

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4
Q

Insertion of Trapezius

A

Lateral 1/3 of Clavicle
Acromion
Spine of Scapula

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5
Q

Action of Trapezius

A

Unilateral: Lateral flexion of head
Bilateral: Extension of head
Elevation of Scapula
Retraction of Scapula
Upward rotation of Scapula
Downward rotation of Scapula

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6
Q

Innervation of Trapezius

A

Spinal Accessory Nerve (CN XI)
Cervical Spinal n dorsal rami

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7
Q

What is the origin of the Levator Scapulae?

A

TPs of C1-C4

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8
Q

Where does the Levator Scapulae insert?

A

Medial border of scapula (superior part)

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9
Q

What is the action of the Levator Scapulae?

A

Elevation of scapula, extension and lateral flexion of neck

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10
Q

What is the innervation of the Levator Scapulae?

A

Dorsal scapular nerve

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11
Q

What is the origin of the Splenius Capitis?

A

SPs of C4-T4 and nuchal ligament

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12
Q

What is the insertion of the Splenius Capitis?

A

Mastoid process and superior nuchal line

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13
Q

What is the unilateral action of the Splenius Capitis?

A

Ipsilateral rotation and lateral flexion of head and neck

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14
Q

What is the bilateral action of the Splenius Capitis?

A

Extension of head and neck

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15
Q

What is the innervation of the Splenius Capitis?

A

Cervical spinal nerves (dorsal rami)

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16
Q

What is the origin of the Splenius Cervicis?

A

SPs of T3-T6

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17
Q

What is the insertion of the Splenius Cervicis?

A

TPs of C1-C3

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18
Q

What is the unilateral action of the Splenius Cervicis?

A

Ipsilateral rotation and lateral flexion of neck

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19
Q

What is the bilateral action of the Splenius Cervicis?

A

Extension of neck

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20
Q

What is the innervation of the Splenius Cervicis?

A

Cervical spinal nerves (dorsal rami)

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21
Q

What is the origin of the sternocleidomastoid (SCM)?

A

Sternal head: manubrium of sternum; Clavicular head: medial portion of clavicle

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22
Q

What is the insertion of the sternocleidomastoid (SCM)?

A

Mastoid process

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23
Q

What are the actions of the sternocleidomastoid (SCM)?

A

Rotation of head to contralateral side; Lateral flexion to ipsilateral side; Bilateral action: neck flexion

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24
Q

What is the motor innervation of the sternocleidomastoid (SCM)?

A

Spinal accessory nerve (CN XI)

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25
What is the sensory innervation of the sternocleidomastoid (SCM)?
Cervical spinal nerves (ventral rami)
26
What is the origin of the Rectus Capitis Posterior Major?
SP of C2
27
What is the insertion of the Rectus Capitis Posterior Major?
Lateral portion of inferior nuchal line
28
What are the actions of the Rectus Capitis Posterior Major?
Extension, ipsilateral rotation & lateral flexion of head
29
What is the nerve supply for the Rectus Capitis Posterior Major?
Suboccipital nerve
30
What is the origin of the Rectus Capitis Posterior Minor?
Posterior tubercle of C1
31
What is the insertion of the Rectus Capitis Posterior Minor?
Medial portion of inferior nuchal line
32
What are the actions of the Rectus Capitis Posterior Minor?
Extension & ipsilateral lateral flexion of head
33
What is the nerve supply for the Rectus Capitis Posterior Minor?
Suboccipital nerve
34
What is the origin of the Obliquus Capitis Superior?
TP of C1
35
What is the insertion of the Obliquus Capitis Superior?
Below inferior nuchal line (occipital bone)
36
What are the actions of the Obliquus Capitis Superior?
Extension, ipsilateral rotation & lateral flexion of head
37
What is the nerve supply of the Obliquus Capitis Superior?
Suboccipital nerve
38
What is the origin of the Obliquus Capitis Inferior?
SP of C2
39
What is the insertion of the Obliquus Capitis Inferior?
TP of C1
40
What are the actions of the Obliquus Capitis Inferior?
Extension & ipsilateral rotation of head
41
What is the nerve supply of the Obliquus Capitis Inferior?
Suboccipital nerve
42
What is the origin of the posterior belly of the digastric muscle?
Mastoid process
43
What is the origin of the anterior belly of the digastric muscle?
Digastric fossa of mandible
44
Where does the digastric muscle insert?
Hyoid bone (both bellies)
45
What is the action of the digastric muscle?
Elevation of hyoid bone and depression of mandible ## Footnote Stabilizes hyoid bone for infrahyoid action
46
What is the innervation of the posterior belly of the digastric muscle?
Facial nerve CN VII
47
What is the innervation of the anterior belly of the digastric muscle?
Trigeminal nerve CN V
48
What is the origin of the Stylohyoid muscle?
Styloid process
49
What is the insertion point of the Stylohyoid muscle?
Hyoid bone
50
What is the action of the Stylohyoid muscle?
Elevation of hyoid (during swallowing) ## Footnote Stabilizes hyoid bone for infrahyoid action.
51
What is the innervation of the Stylohyoid muscle?
Facial nerve CN VII
52
What is the origin of the Stylohyoid muscle?
Styloid process
53
What is the insertion point of the Stylohyoid muscle?
Hyoid bone
54
What is the action of the Stylohyoid muscle?
Elevation of hyoid (during swallowing) ## Footnote Stabilizes hyoid bone for infrahyoid action.
55
What is the innervation of the Stylohyoid muscle?
Facial nerve CN VII
56
What is the origin of the geniohyoid muscle?
Inner surface of mandible
57
What is the insertion point of the geniohyoid muscle?
Hyoid bone
58
What is the action of the geniohyoid muscle?
Elevation of hyoid bone (depress mandible)
59
What is the innervation of the geniohyoid muscle?
Hypoglossal nerve (CN XII)
60
What is the origin of the Mylohyoid?
Inner surface of mandible
61
What is the insertion of the Mylohyoid?
Hyoid bone
62
What is the action of the Mylohyoid?
Elevation of hyoid bone (depression of mandible when hyoid is fixed)
63
What is the innervation of the Mylohyoid?
Trigeminal nerve (CN V)
64
What is the origin of the thyrohyoid muscle?
Thyroid cartilage
65
What is the insertion point of the thyrohyoid muscle?
Body of hyoid bone
66
What is the action of the thyrohyoid muscle?
Depression of hyoid bone (elevation of thyroid cartilage)
67
What is the innervation of the thyrohyoid muscle?
C1 via CN XII (hypoglossal nerve)
68
What is the origin of the sternothyroid muscle?
Manubrium
69
What is the insertion point of the sternothyroid muscle?
Thyroid cartilage
70
What is the action of the sternothyroid muscle?
Depression of thyroid cartilage
71
What is the innervation of the sternothyroid muscle?
Ansa cervicalis (loop of nerves that are part of the cervical plexus)
72
What is the origin of the sternohyoid?
Manubrium and sternoclavicular joint
73
What is the insertion of the sternohyoid?
Body of hyoid bone
74
What is the action of the sternohyoid?
Depression of hyoid bone and larynx
75
What is the innervation of the sternohyoid?
Ansa cervicalis
76
What is the origin of the omohyoid muscle?
Superior scapular border (muscle has a superior and inferior belly)
77
What is the insertion point of the omohyoid muscle?
Hyoid bone
78
What is the action of the omohyoid muscle?
Depression of hyoid bone and larynx
79
What is the innervation of the omohyoid muscle?
Ansa cervicalis
80
What is the origin of Longus Capitis?
TPs of C3-C5
81
Where does Longus Capitis insert?
Occipital bone (anterior foramen magnum)
82
What is the action of Longus Capitis?
Flexion of head and neck
83
What is the innervation of Longus Capitis?
Cervical spinal nerves (ventral rami)
84
What is the origin of Longus Cervicis (colli)?
Lower anterior vertebral bodies and TPs of C3-T3
85
What is the insertion of Longus Cervicis (colli)?
Anterior vertebral bodies and TPs of C1-C6
86
What is the action of Longus Cervicis (colli)?
Flexion and lateral flexion of neck
87
What is the innervation of Longus Cervicis (colli)?
Cervical spinal nerves ventral rami
88
What is the origin of the Anterior Scalene?
TPs of C3-C6
89
What is the insertion of the Anterior Scalene?
1st rib
90
What actions does the Anterior Scalene perform?
Flexion and ipsilateral lateral flexion of neck, elevation of 1st rib
91
What is the innervation of the Anterior Scalene?
Cervical spinal nerves, ventral rami
92
What is the origin of the Middle Scalene?
TPs of C2-C7
93
What is the insertion of the Middle Scalene?
1st rib
94
What is the action of the Middle Scalene?
Flexion and ipsilateral lateral flexion of neck; elevation of 1st rib
95
What is the innervation of the Middle Scalene?
Cervical spinal nerves (ventral rami)
96
What is the origin of the Posterior Scalene?
TPs of C5-C7
97
What is the insertion of the Posterior Scalene?
2nd rib
98
What is the action of the Posterior Scalene?
Ipsilateral lateral flexion of neck and elevation of 2nd rib
99
What is the innervation of the Posterior Scalene?
Cervical spinal nerves (ventral rami)

Anatomy Lab (18 decks)

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