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Anatomy ii Module IV > muscles of larynx > Flashcards

muscles of larynx Flashcards

1
Q

Cricothyroid muscle action, does it lengthen or shorten the vocal ligaments?

A

TILTS thyroid cartilage forward and down on the cricoid, this LENGTHENS the vocal ligaments

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2
Q

Cricothyroid innervation?

A

External Branch of Superior Laryngeal nerve

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3
Q

Cricothyroid attachments?

A

Cricoid Arch

thyroid cartilage

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4
Q

Posterior Cricoarytenoid Muscle attachmetns?

A

Cricoid Lamina

Muscular process of arytenoid cartilage

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5
Q

Posterior Cricoarytenoid Muscle action?

A

ABducts the vocal folds/ open rima glottidis. Pulls arytenoids backwards, and assists cricothyroid to tense the vocal cords

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6
Q

What is the ONLY muscle that opens the rima glottidis

A

the Posterior Cricoarytenoid Muscle

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7
Q

Posterior Cricoarytenoid Muscle Innervation?

A

Recurrent laryngeal nerve

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8
Q

Transverse and Oblique Arytenoid Muscles Attachments

A

From one arytenoid cartilage to the other arytenoid cartilage

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9
Q

Aryepiglottic Muscle attachment

A

formed by oblique arytenoid fibers that continue into the aryepiglottic fold

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10
Q

Action of the Tranverse and Oblique Arytenoid Muscles and Aryepiglottic Muscles?

A

ADDucts the arytenoid cartilages closing posterior rima glottidis

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11
Q

Transverse and Oblique Arytenoid muscles and Aryepiglottic Muscle innervation?

A

Recurrent laryngeal nerve

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12
Q

Vocalis Muscles attachments

A 
Arytenoid cartilage (vocal process)
Angle of the thyroid cartilage and along the vocal ligament
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13
Q

Vocalis muscle Action

A

Produces minute adjustments of the vocal ligaments, contraction produces localized relaxation of the vocal ligament

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14
Q

Vocalis Muscle Innervation

A

Recurrent Laryngeal nerve

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15
Q

Thyroarytenoid Muscles attachments

A

Arytenoid cartilage

Angle of thyroid cartilage and along cricothyroid ligament

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16
Q

Thyroarytenoid Muscle action

A

draw arytenoid cartilages towards the thyroid cartilage, thereby relaxing vocal ligaments

17
Q

Thyroarytenoid Muscles innervation

A

recurrent laryngeal nerve

18
Q

During deglutition the larynx _____ and ______

A

elevates and moves anteriorly

19
Q

When u swallow the epiglottis bends _____

A

bends posteriorly

20
Q

What supplies all laryngeal sensation above the level of the vocal fold?

A

internal branch of superior laryngeal nerve

21
Q

What supplies all sensation for the larynx BELOW the vocal fold?

A

recurrent laryngeal nerve

22
Q

What gives motor innervation to all intrinsic muscles of the larynx? What is the exception?

A

All are innervated by the recurrent laryngeal nerve, except for the cricothyroid muscle which is innervated by EXTERNAL branch of superior laryngeal nerve

23
Q

The inferior laryngeal nerve is the name of the _____ as it passes to the larynx?

A

recurrent laryngeal nerve

24
Q

the Quadrangular membrane is between the

A

Epiglottis to arytenoid cartilage

25
Q

What is the aryepiglottic ligament?

A

its the free SUPERIOR margin of the quadrangular membrane

26
Q

What is the vestibular ligament?

A

the free INFERIOR margin of the quadrangular membrane

27
Q

Where does the Cricothyroid ligament extend from?

A

From the Cricoid cartilage to the thyroid cartilage and arytenoid cartilage

28
Q

What is the Vocal ligament?

A

the free SUPERIOR margin of the cricothyroid ligament

29
Q

What is the aryepiglottic fold?

A

its the aryepiglottic ligament when it is covered by mucosa, it contains the corniculate and cuneiform cartilages

30
Q

What is the Vestibular fold?

A

its the vestibular ligament when covered by a mucous membrane, they are also called the FALSE vocal cords

31
Q

What is the Rima vestibuli?

A

the opening between the vestibular folds

32
Q

What are the Vocal folds?

A

the Vocal ligaments when they are covered by a mucous membrane, these are the TRUE vocal folds

33
Q

What is the Rima glottidis?

A

the opening between the vocal folds

34
Q

The laryngeal cavity extends from the laryngeal inlet and extends to the

A

trachea

Anatomy ii Module IV (3 decks)

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