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MABS Anatomy - Anterior Neck > Anterior Neck > Flashcards

Anterior Neck Flashcards

1
Q

Platysma superior?

A

inf. border of mandible + subcutaneous tissue of lower face

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2
Q

Platysma inferior?

A

fascia covering pectoralis major and deltoid

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3
Q

Platysma innervation?

A

Facial n (CN7)

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4
Q

Platysma action?

A

Draws corners of mouth inferiorly and widens it; draws skin of neck superiorly when teeth are clenched

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5
Q

Sternocleidomastoid superior?

A

mastoid process

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6
Q

Sternocleidomastoid inferior?

A

anterior manubrium and superior medial clavicle

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7
Q

Sternocleidomastoid innervation?

A

spinal accessory n (CN11)

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8
Q

Sternocleidomastoid action?

A

a. unilateral – flex and rotate head to same side
b. bilateral – flex neck anteriorly
c. with head fixed&raquo_space; elevate sternum for ventilation

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9
Q

Scalenes superior?

A

cervical vertebrae (CII-CVII)

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10
Q

Scalenes inferior?

A

first and second ribs

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11
Q

Scalenes innervation?

A

anterior rami of C3-C8

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12
Q

Scalenes action?

A

elevate rib 1 and 2

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13
Q

Digastric origin?

A

Anterior belly arises from digastric fossa of mandible

posterior belly arises from mastoid process

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14
Q

Digastric distal?

A

both bellies are connected by an intermediate tendon, which attached to hyoid e via fibrous sling

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15
Q

Digastric innervation?

A

anterior belly trigeminal n (V3); posterior belly digastric branch of facial n (CN7)

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16
Q

Digastric action?

A

depresses mandible and -elevates hyoid

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17
Q

Mylohyoid origin?

A

mylohyoid line (of mandible

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18
Q

Mylohyoid distal?

A

hyoid

19
Q

Mylohyoid innervation?

A

Mandibular branch of trigeminal n (CNV3)

20
Q

Mylohyoid action?

A

raises oral cavity floor, elevates hyoid, elevates tongue, depresses mandible

21
Q

Geniohyoid origin?

A

mandible

22
Q

Geniohyoid distal?

A

Hyoid

23
Q

Geniohyoid innervation?

A

C1 (travels with hypoglossal n (CN12)

24
Q

Geniohyoid action?

A

moves hyoid and tongue upward during swallowing

25
Q

Stylohyoid origin?

A

styloid process

26
Q

Stylohyoid distal?

A

hyoid

27
Q

Stylohyoid innervation?

A

facial n (CN VII)

28
Q

Stylohyoid action?

A

elevate hyoid during swallowing

29
Q

Omohyoid origin?

A

superior border of the scapula near suprascapular notch

30
Q

Omohyoid distal?

A

inferior border of the hyoid

31
Q

Omohyoid innervation?

A

both via anterior rami (of C1-C3 via ansa cervicalis)

32
Q

Omohyoid action?

A

depresses, retracts, steadies hyoid

33
Q

sternohyoid origin?

A

manubrium of sternum

34
Q

sternohyoid distal?

A

hyoid

35
Q

sternohyoid innervation?

A

anterior rami 1-C3 via branch of ansa cervicalis

36
Q

sternohyoid action?

A

depresses hyoid after elevation during swallowing

37
Q

sternothyroid origin?

A

posterior surface of the manubrium of the sternum

38
Q

sternothyroid distal?

A

oblique line of thyroid cartilage

39
Q

sternothyroid innervation?

A

C2 and C3 by a branch of ansa cervicalis

40
Q

sternothyroid action?

A

depresses hyoid and larynx

41
Q

thyrohyoid origin?

A

Thyroid cartilage

42
Q

thyrohyoid distal?

A

hyoid

43
Q

thyrohyoid innervation?

A

C1 via hypoglossal n (CN12)

44
Q

thyrohyoid action?

A

elevates thyroid and depresses hyoid

MABS Anatomy - Anterior Neck (1 decks)

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