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Gross Anatomy Exam 4 > Larynx > Flashcards

Larynx Flashcards

1
Q

Laynx connects?

A

Lower part of pharynx to trachea

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2
Q

Larynx functions

A
  1. Prevent choking

2. Vocalization

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3
Q

Lyngeal cc. connections

A

Cr: hyoid b.

Cd: trachea

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4
Q

4 cc. of larynx

A
  1. Arytenoid c.
  2. Thyroid c.
  3. Cricoid c.
  4. Epiglottic c.
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5
Q

Epiglottic c. during swallowing?

A

Tilts backward to partially cover opening of larynx

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6
Q

Largest c. of larynx

A

Thyroid c.

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7
Q

Thyroid c. is open on which side?

A

Dorsally

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8
Q

Oblique line of thyroid c. is insertion for?

A

Sternothyroideus m.

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9
Q

Cr. laryngeal n. and a. pass through?

A

Rostral thyroid notch

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10
Q

Which side of cricoid c. is wider?

A

Dorsal > ventral

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11
Q

Lamina of cricoid c.

A

Expanded dorsal part with median crest (for m. attachment)

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12
Q

Articular facets of cricoid c.

A
  1. Cricoarytenoid articulation (rostral border of lamina)

2. Cricothyroid articulation (junction of lamina and arch)

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13
Q

Only paired laryngeal c.

A

Arytenoid c.

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14
Q

Attachments to cuneiform process

A

Vestibular lig. and m.

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15
Q

Attachments of vocal process

A

Vocal lig. and vocalis m.

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16
Q

Laryngeal cavity is divided into what 3 transverse segments?

A
  1. Vestibule (rostral to glottis)
  2. Rima glottidis (middle, narrow)
  3. Infraglottic cavity (cd. to glottis)
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17
Q

Rima glottidis aka?

A

Glottic cleft

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18
Q

Vestibule of larynx extends from ? to ?

A

Laryngeal inlet to vestibular fold

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19
Q

Vestibule of larynx opens freely where?

A

Dorsorostrally

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20
Q

Laryngeal inlet lies?

A

Directly cd. to intrapharyngeal ostium

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21
Q

Borders of laryngeal inlet

A

Lateral: epiglottis

Cd: right and left aryeopiglottic folds

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22
Q

Vestibular fold extends from ? to ?

A

Cuneiform process to thyroid c.

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23
Q

Glottis consists of?

A
  1. Arytenoid c.

2. Vocal fold

24
Q

Narrowest part of laryngeal passageway

A

Rima glottidis

25
Q

2 parts of rima glottidis

A
  1. Intercartilagenous part

2. Intermembranous part

26
Q

Intercartilagenous part of rima glottidis is located between?

A

Medial surfaces of arytenoid cc.

27
Q

Intermembranous part of rima glottidis is located between?

A

Vocal folds

28
Q

Vocal folds extend from ? to ?

A

Vocal process of arytenoid c. to thyroid c.

29
Q

Vocal folds located?

A

Cd. to laryngeal ventricle

30
Q

Infraglottic cavity extends from ? to ?

A

Glottic cleft to beginning of trachea

31
Q

Infraglottic cavity is wide on which side?

A

Dorsally > narrow

32
Q

infraglottic cavity is entirely contained within?

A

Cricoid c.

33
Q

2 major ligs. of larynx

A
  1. Cricotracheal lig.

2. Cricothyroid lig.

34
Q

4 extrinsic mm. of larynx

A
  1. Thyrohyoideus m.
  2. Sternothyroideus m.
  3. Thyropharyngeus m.
  4. Cricopharyngeus m.
35
Q

Extrinsic mm. connect?

A

Larynx with hyoid b., pharynx and sternum

36
Q

Intrinsic mm. of larynx

A

Pass from one c. to another and move them in relation to each other

37
Q

Function of intrinsic mm. of larynx

A
  1. Widen and narrow glottic cleft

2. Tens and relax vocal fold

38
Q

Cricothyroideus m. action and innervation

A

A: tense vocal fold

I: cr. laryngeal n.

39
Q

Cricoarytenoideus dorsalis m. action and innervation

A

A: main abductor of arytenoid c.

I: cd. laryngeal n.

40
Q

Cr. laryngeal n. only innervates?

A

Cricothyroideus m.

41
Q

Cricoarytenoideus lateralis m. action and innervation

A

A: closes glottic cleft

I: cd. laryngeal n.

42
Q

Thyroarytenoideus m. action and innervation

A

A: relax vocal fold, constrict glottis

I: cd. laryngeal n.

43
Q

Thyroarytenoideus m. is divided into?

A

Ventricularis and vocalis mm.

44
Q

Ventricularis m.

A

Rostral division, constricts glottis and dilates laryngeal saccule

45
Q

Vocalis m.

A

Medial division, lies inside vocal fold with vocal lig. and draws arytenoid c. (to relax vocal fold)

46
Q

Arytenoideus transversus m. action and innervation

A

A: constrict glottis

I: cd. laryngeal n.

47
Q

Cd. laryngeal n. innervates?

A
  1. Cricoarytenoideus m. (dorsalis and lateralis)
  2. Thyroartenoideus m.
  3. Arytenoideus transversus m.

All intrinsic mm. of larynx except cricothyroid m.

48
Q

Blood supply of larynx

A

Cr. laryngeal a.

49
Q

Cr. laryngeal a. is a drect branch from?

A

External carotid a.

50
Q

Cr. laryngeal a. runs ventrally with?

A

Cr. laryngeal n.

51
Q

Cr. laryngeal a. supplies?

A

Most of the mucosa and intrinsic mm. of larynx

52
Q

Larynx is innervated by brahces of?

A

Vagus n. (cr. laryngeal and cd. laryngeal)

53
Q

Cr. laryngeal n. leaves vagus at level of?

A

Distal ganglion of vagus (nodose ggl.)

54
Q

Branches of cr. laryngeal n.

A

External and internal branches

55
Q

External br. of cr. laryngeal n. innervates?

A

Cricothyroid m.

56
Q

Internal b. of cr. laryngeal n. innervates?

A

Mucosa

57
Q

Cd. laryngeal n. is the terminal segment of?

A

Recurrent laryngeal n.

Gross Anatomy Exam 4 (17 decks)

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