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Block 2: Anatomy > Head and Neck mm. OIA and Innervation > Flashcards

Head and Neck mm. OIA and Innervation Flashcards

1
Q

Occipitofrontalis m. (both bellies)

A

Frontal Belly:
Origin: epicranial aponeurosis
Insertion: Skin of forehead/eyelids (NOT bone)
Action: Elevates eyebrows, wrinkles forehead.
Nerve: Facial Nerve (CN VII)

Occipital Belly:
Origin- Occipital bone, part of temporal bone
Insertion: Epicranial aponeurosis
Action: smoothes out forehead
Nerve: Facial Nerve (CN VII)
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2
Q

Stylohyoid m

A

O: styloid process of temporal bone
I: hyoid
A: Pulls hyoid superiorly and posteriorly.
Nerve: Facial n. CNVII

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3
Q

Platysmus action and innervation?

A

A: Draws skin of neck superiorly, widens mouth and drops corners inferiorly
Nerve: cervical branch of facial n

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4
Q

Digastric m

A 
O: digastric fossa of mandible 
I: mastoid process
A: Lowers mandible or raises hyoid (swallowing)
Innervation: 
anterior belly- v3 of CNV
posterior belly- CNVII
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5
Q

mylohyoid m.

A

O: mylohyoid line of mandible
I: midline raphe and hyoid bone
A: supports/elevates floor of mouth, elevates hyoid during swallowing
Innervaton: v3 of CNV

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6
Q

Geniohyoid m.

A

O: inferior mental spine
I: hyoid
A: raises hyoid bone in swallowing and elevates floor of mouth and tongue.
Innervation: C1 fibers via hypoglossal n.

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7
Q

Sternohyoid m.

A

O: sternoclavicular joint and manubrium
I: hyoid
A: depresses hyoid during swallowing
Innervation: ansa cervicalis

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8
Q

omohyoid m.

A

O/I: inferior belly- scapula
superior belly- hyoid
A: depresses larynx and hyoid, also pulls hyoid posteriorly/laterally
Innervation: ansa cervicalis

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9
Q

Thyrohyoid m.

A

O: thyroid cartilage
I: hyoid
A: depresses hyoid, or raises larynx
N: C1

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10
Q

Sternothyroid m.

A

O: manubrium
I: thyroid cartilage
A: moves larynx downward
N: ansa cervicalis

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11
Q

Palatoglossus m. (include sensory innervation)

A

A: moves soft palate toward tongue.
N: Vagus n. via pharyngeal plexus
sensory: V2 and CN IX- glossopharyngeal

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12
Q

palatopharyngeus muscle (include sensory)

A

A: tenses soft palate during swallowing
N: vagus n.
Sensory: V2 and CN IX- glossopharyngeal

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13
Q

Levator palatini m. (include sensory)

A 
O: cartilage of auditory tube
I: Soft palate
A: elevates soft palate during swallowing
N: vagus n. via pharyngeal plexus
Sensory: V2 and CN IX- glossopharyngeal
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14
Q

Tensor palatini (include sensory)

A

Attachments: Scaphoid fossa (b/w pterygoid plates), hamulus (on medial pterygoid plate), torus auditory tube
A: opens auditory tube during swallowing
N: CNV3
Sensory: V2 and CN IX- glossopharyngeal

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15
Q

Musculus uvulae

A

A: closes aperture b/w oral and nasal during swallowing
N: vagus n. via pharyngeal plexus
Sensory: V2 and CN IX- glossopharyngeal

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16
Q

All palate muscles except one are innervated by what nerve? What is the exception?

A

Vagus n. via pharyngeal plexus. The exception is the tensor palatini.

17
Q

genioglossus m innervation

A

CN XII hypoglossal

18
Q

hyoglossus m innervation

A

CN XII hypoglossal

19
Q

styloglossus m innervation

A

CN XII hypoglossal

20
Q

All extrinsic glossal muscles except one are innervated by?

A

CN XII hypoglossal. Exception is the palatoglossus m, which is innervated by the Vagus n. via the pharyngeal plexus.

21
Q

All intrinsic tongue muscles are innervated by?

A

CN XII hypoglossal

22
Q

Stylopharyngeus m. innervation

A

CN IX glossopharyngeal

23
Q

Connection between otitis media and breast feeding?

A

More effort required when breast feeding, so the tensor palatini gets strong and opens the auditory tube. this cleans it out protecting it from infection.

24
Q

What is the only soft palate muscle that is part of the oropharynx?

A

The palatopharyngeus m

25
Q

taste and sensation from most of posterior 1/3 tongue?

A

CN IX glossopharyngeal.

26
Q

What cranial nerve is deep to the palatine tonsilar bed? It goes to tongue..

A

CN IX glossopharyngeal. Often gets confused with XII.

27
Q

What artery is behind the palatine tonsil?

A

The tonsilar br. of the facial a.

28
Q

the laryngopharynx extends from?

A

behind larynx, from the epiglottis to the esophagus.

29
Q

middle pharyngeal constrictor does what?

A

closes off hyoid

30
Q

superior pharyngeal constrictor does what?

A

closes off mandible

31
Q

inferior pharyngeal constrictor does what?

A

closes off thyroid cartilage.

32
Q

Where exactly is the superior cervical ganglion? Behind what?

A

behind superior pharyngeal constrictor m, in the retropharyngeal space. Also behind carotid sheath.

33
Q

cricothyroid action?

A

Rocks thyroid cartiage forward, raising pitch

Block 2: Anatomy (11 decks)

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