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Anatomy > Larynx > Flashcards

Larynx Flashcards

1
Q

Structural Makeup of Larynx (2)

A

1 bony structure (hyoid bone) and everything else cartilaginous

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2
Q

Laryngeal prominence of thyroid cartilage

A

Adam’s apple for resonance

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3
Q

Superior horn of thyroid cartilage

A

Stick up on lateral sides

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4
Q

Inferior horn of thyroid cartilage

A

Stick down on lateral sides

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5
Q

Thyroid notch

A

V shape going into laryngeal prominence

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6
Q

Oblique line

A

Line at lateral edges of laminae where many muscles attach

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7
Q

Laminae

A

Anterior surfaces of thyroid cartilage

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8
Q

Cricoid Cartilage Shape (2)

A

“Signet ring,” large in back and small in front.

Only complete circle in respiratory system

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9
Q

Cricoid cartilage functions

A

Decides what can fall into the lungs and not

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10
Q

Epiglottic Cartilage (2)

A

Leaf shaped elastic cartilage

Attached to thyroid cartilage

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11
Q

Arytenoid Cartilages (2)

A

Little paired cartilages above cricoid cartilage (posterior section) and behind thyroid cartilage where vocal ligament attaches

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12
Q

2 Processes of Arytenoid Cartilage

A

Muscular process projecting lateral

Vocal process projecting anteriorly where vocal ligaments come off

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13
Q

Corniculate Cartilages

A

Give a little structural support to epiglottic fold

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14
Q

Cartilago Triticea

A

Little cartilaginous structure stuck in posterior part of thyrohyoid membrane giving added support

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15
Q

Thyrohyoid membrane

A

Ligamentous membrane connecting hyoid and thyroid cartilage

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16
Q

Hyoepiglotic Membrane Location/Function

A

B/w hyoid and epiglottis and prevents it from bending too far over

17
Q

Cricothyroid ligament

A

B/w thyroid and cricoid cartilage

18
Q

Tracheotomy Location

A

Cricothyroid ligament

19
Q

Vocal Fold

A

Intrinsic tissue under vestibular fold that contains vocal ligament

20
Q

Cricothyroid m.s

A

Angles thyroid more anteriorly which tenses vocal folds

21
Q

Innervation of Larynx Muscles (2)

A

All by recurrent laryngeal n. of vagus except cricothyroid m.s which are innervated by external laryngeal branch of superior laryngeal n. by vagus

22
Q

6 Paired Muscles of Larynx

A 
Cricothyroid m.s
Posterior cricoarytenoid m.s
Oblique arytenoid (aryepiglottic) m.s
Lateral cricoarytenoid m.s
Thyroarytenoid m.s
Thyroepiglottic m.s
23
Q

Unpaired Muscle of Larynx

A

Transverse arytenoid m.

24
Q

Vocalis m. (description and function)

A

Subdivision of thyroarytenoid that doesn’t make it all the way to arytenoid but attaches to vocal ligament, tightening posterior part but loosening anterior part to create different vocal sounds

25
Q

Action of Posterior Cricoarytenoid m.s

A

Open vocal ligaments

26
Q

Renoglottis

A

Space b/w vocal folds/ligaments

27
Q

Action of Lateral cricoarytenoid m.s

A

Close vocal ligaments

28
Q

Action of Transverse arytenoid m.

A

Close vocal ligaments

29
Q

Action of Thyroarytenoid and vocalis m.s

A

Generally relax vocal ligaments

30
Q

Sensory Innervation of Larynx (2)

A

Above vocal folds: internal laryngeal branch of superior laryngeal n. (X)
Below vocal folds: Recurrent laryngeal n. (X)

31
Q

Arterial Supply of Larynx (2)

A

Superior laryngeal branch of superior thyroid a.

Inferior laryngeal branch of inferior thyroid a.

32
Q

Laryngeal aditus

A

Opening of larynx made by epiglottis and aryepiglottic folds

33
Q

Epiglottic valleculi

A

Spaces b/w epiglottis and tongue b/w median and 2 lateral glossoepiglotic folds

34
Q

Larynx Internal Structure (7 Superior-Inferior)

A 
Vestibule
Vestibular folds
Laryngeal ventricles
Vocal folds
Rima glottidis
Infraglottic space
Trachea
35
Q

Loss of Recurrent Laryngeal Nerve (2)

A

Only muscle left will be cricothyroid m. which can only tense vocal folds, sensation loss and damage to speaking
Have to be careful when removing thyroid for this reason

36
Q

Carcinoma of Larynx

A

Can have to remove parts, use vocal box to speak

Anatomy (28 decks)

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