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Gross Anatomy > Final Exam - Muscles and Foramen > Flashcards

Final Exam - Muscles and Foramen Flashcards

1
Q

Posterior belly of digastric

A

CN VII - Facial N.

Elevates hyoid bone

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2
Q

Stylohyoid

A

CNVII - Facial N.

Elevates hyoid bone

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3
Q

Platysma

MM of facial expression**

A

CNVII - Facial N.

Facial Expression

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4
Q

Anterior belly of digastric

A

CNV - Mandibular Division of Trigeminal N. (V-3)

Elevates hyoid bone

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5
Q

Mylohyoid

A

N. to Mylohyoid from Mandibular Division of Trigeminal N. (V3)

Tightens and elevates oral floor; draws hyoid bone forward during swallowing, helps open and laterally move the mandible for chewling.

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6
Q

Temporalis
Maseter
Medial and lateral pterygoid

A

Mandibular division of trigeminal N.

Temporalis is innervated by auricotemporal N.

Muscles of mastication elevate the mandible or close the jaw. Lateral pterygoid bilaterally protrudes the jaw with help from masseters and medial pterygoid.

Lateral pterygoid unilaterraly - moves jaw to lateral

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7
Q

Trapezius

A

Spinal Accesory N

Steady scapula on the thorax; rotates glenoid cavity superiorly.

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8
Q

SCM

A

Spinal accessory n.

unilaterally tilts head to ipsilateral side, laterally flexes the neck and rotates face to point superiorly, bilaterally flexes the neck “chin to chest”

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9
Q

Infrahyoid muscles (except thyrohyoid)

A 
Ansa cervicalis (C1-C3 ventral rami)
Connect hard structures of the neck to the sternum. When contracted, pull structures down for swallowing.
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10
Q

Thyrohyoid

A

C1 ventral ramus (hitchhikes iwth hypoglossal n.).

Thyrohyoid: depresses hyoid and draws the larynx and hyoid down for swallowing.

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11
Q

Geniohyoid

A

C1 ventral ramus

Draws the hyoid bone forward during swallowing and helps laterally move the manidble for chewing.

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12
Q

Palatopharyngeus

A

Vagus N.

Tightens soft palate

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13
Q

Palatoglossus

A

Vagus N

Elevates posterior tongue and depresses the soft palate

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14
Q

Muscularis Uvula

A

Vagus N.

Shortens and raises uvula

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15
Q

Levator veli palatine

A

Vagus N.

Elevates soft palate (say “ahh”)

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16
Q

Salpingopharyngeus

A

Vagus N.

Elevates the pharynx

17
Q

Sup. mid., inf - Constrictors

A

Vagus N.

Constrictors: constrict pharynx

18
Q

Stylopharyngeus

A

Glossopharyngeal N.

Elevates pharynx

19
Q

Tensor Veli Palatini

A

Trigeminal N.

Tenses soft palate

20
Q

Genioglossus

A

Hypoglossal N.

Wags, protrudes, depresses tongue; rolls tongue edges to create a trough

21
Q

Hyoglossus

A

Hypoglossal N.

Depresses, shortens tongue and pulls sides inferiorly

22
Q

Styloglossus

A

Hypoglossal N.

retracts, curls sides of tongue, forms a trough for swallowing with genioglossus muscle.

23
Q

Superior and inferior longitudinal muscles

A

Hypoglossal n.
Sup - curls the tongue up, shortens tongue

Inf - curls tongue longitudinally, depresses apex, shortens tongue

24
Q

ALL larynx EXCEPT cricothyroid

A

Recurrent laryngeal N.
Adducts vocal cords

Cricoarytenoid aBducts the vocal cords so tehy can relax.

25
Q

Cricothyoid

A

External branch of superior laryngeal n.

Runs with superior thyroid artery

Tenses the vocal cords

26
Q

Facial Expression muscles

A

occippital frontalis, orbicularis oculi, procerus, nasalis.

27
Q

Mouth msucles

A

levator labii superioris, levator anguli oris, buccinators, mentalis, zygomaticus, risorius,, orbicularis oris, depressor angulli, oris, depressor labii inferioris, depressor septi nasi

28
Q

Neck muscle

A

platysma

29
Q

Cribiform plate

A

olfactory nerve

30
Q

optic canal

A

optic nerve and opthalmic artery

31
Q

superior orbital fissure

A

CN 3, 4, 6 and opthalmic division of the trigeminal n.

32
Q

foramen rotundum

A

maxilary division of trigeminal n.

33
Q

foramen spinosum

A

middle meningeal artery

34
Q

auditory meatus

A

vestibulocochlear n.

35
Q

jugular formane

A

CN 9, 10, 11, internal jugular vein

36
Q

hypoglossal canal

A

hypoglossal n

37
Q

foramen magnum

A

medulla oblongata, meninges, vertebral artery, CN 11

38
Q

Foramen lacerum

A

No structures

Gross Anatomy (6 decks)

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