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Unit 3 HDC > Muscles > Flashcards

Muscles Flashcards

1
Q

Geniohyoid origin and insertion

A

O: mental spines of the mandible
I: Body of hyoid

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2
Q

Geniohyoid action

A

Depress the mandible
Elevate the hyoid bone

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3
Q

Geniohyoid innervation and artery

A

N: C1 carried by hypoglossal n
A: Sublingual a

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4
Q

Mylohyoid origin and insertion

A

O: mylohyoid line of the mandible

I: midline raphe
body of the hyoid

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5
Q

Mylohyoid action

A

Depress mandible
Elevate tongue and hyoid bone

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6
Q

Mylohyoid innervation and artery

A

N: n to the mylohyoid
(from alveolar n from CNV(3))

A: Submental a
Sublingual a

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7
Q

Digastric origin and insertion

A

O: anterior belly - digastric fossa of mandible; posterior belly - mastoid notch of temporal bone

I: Body of hyoid via fibrous loop over intermediate tendon

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8
Q

Digastric action

A

Elevates hyoid bone
Depresses the Mandible

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9
Q

Digastric innervation and artery

A

N: Anterior belly - mylohyoid n from CNV(3); Posterior belly - Fascial n (CNVII)

A: Anterior belly - submental a. ; posterior belly - occipital a.

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10
Q

Omohyoid origin and insertion

A

O: Inferior belly - upper border of scapula medial to scapular notch; superior belly - intermediate tendon

I: Inferior belly - intermediate tendon; superior belly - lower border of the hyoid lateral to sternohyoid insertion

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11
Q

Omohyoid action

A

Depress/stabilize hyoid bone

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12
Q

Omohyoid innervation and artery

A

N: Ansa Cervicalis C1-3

A: Lingual a., Superior thyroid a.

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13
Q

Stylohyoid origin and insertion

A

O: posterior side of styloid process
I: Splits around digastric intermediate tendon to insert on body of hyoid

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14
Q

Stylohyoid action

A

elevates and retracts hyoid bone

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15
Q

Stylohyoid innervation and artery

A

N: Styloid branch of fascial n CNVII
A: branches from fascial and occipital arteries

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16
Q

Sternohyoid origin and insertion

A

O: Posterior surfaces of manubrium and sternal end of clavicle
I: Lower border of hyoid bone, medial to omohyoid i.

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17
Q

Sternohyoid action

A

Depresses/stabilizes hyoid bone

18
Q

Sternohyoid innervation and artery

A

N: Ansa cervicalis C1-3
A: Superior thyroid a, lingual a.

19
Q

Sternothyroid origin and insertion

A

O: Posterior surface of manubrium, below sternohyoid o.
I: Oblique line of thyroid cartilage

20
Q

Sternothyroid action

A

Depress/stabilize the hyoid bone
Depress larynx

21
Q

Sternothyroid innervation and artery

A

N: Ansa cervicalis C1-3
A: Superior thyroid a.

22
Q

Thyrohyoid origin and insertion

A

O: Oblique line of thyroid cartilage
I: Lower border of hyoid bone

23
Q

Thyrohyoid action

A

Elevate larynx
Depress/stabilize hyoid bone

24
Q

Thyrohyoid innervation and artery

A

N: Ansa cervicalis C1 via hypoglossal n
A: Superior thyroid a.

25
Q

Stapedius origin and insertion

A

O: walls of pyramidal eminence
I: Neck of stapes

26
Q

Stapedius action

A

Dampen vibrations of stapes

27
Q

Stapedius innervation and artery

A

N: Facial n CNVII
A: Anterior tympanic a

28
Q

Tensor Tympani origin and insertion

A

O: Cartilaginous auditory tube, greater wing of sphenoid bone
I: Manubrium of malleus

29
Q

Tensor Tympani action

A

Dampen vibrations of tympanic membrane

30
Q

Tensor Tympani innervation and artery

A

N: Medial pterygoid branch of CNV
A: Superior tympanic branch of middle meningeal a.

31
Q

What are the actions of the pharyngeal constrictors?

A

Constrict walls of pharynx during swallowing

32
Q

What muscles perform the following action:

elevate (shorten and widen) pharynx and larynx, during swallowing and speaking

A

Stylopharyngeus, Salpingopharynges, Palatopharyngeus

33
Q

All of the pharynx muscles are innervated by [ ], except for [ ] which is innervated by [ ]

A

CN X - Pharyngeal branch of Vagus + pharyngeal plexus

Stylopharyngeus
CNIX - glossopharyngeal

34
Q

All of the pharynx muscles recieve blood supply from the Ascending Pharyngeal a, except [ ] which recieves from [ ]

A

Palatopharyngeus

Ascending palatine artery branch of facial artery
Descending palantine artery branch of maxillary artery

35
Q

What hyoid muscles are innervated by C1 fibers via the hypoglossal n

A

Geniohyoid and Thyrohyoid

36
Q

What hyoid muscles are innervated by n to mylohyoid?

A

Mylohyoid
Anterior belly of digastric

37
Q

All of the arytenoid muscles are supplied by [a] artery except for [b] which is supplied by [c]

A

a. Inferior laryngeal a
b. cricothyroid
c. cricothyroid a

38
Q

All of the arytenoid muscles are innervated by [a] except for [b] which is supplied by [c]

A

a. inferior laryngeal n
b. cricothyroid
c. external laryngeal n

39
Q

The transverse and oblique arytenoid muscles perform what action

A

adduct the arytenoid cartilage

40
Q

Which muscles abduct and adduct the vocal folds?

A

Abduct: posterior cricoarytenoid
Adduct: Lateral cricoarytenoid

41
Q

Which muscles stretch/tense and relax the vocal ligament?

A

Stretch/tense - cricothyroid
Relax - thyroarytenoid

42
Q
A

Unit 3 HDC (8 decks)

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