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Anatomy exam 5 > larynx > Flashcards

larynx Flashcards

1
Q

what makes up the larynx

A

cartilage, ligaments, membranes. muscles (no bone)

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2
Q

larynx length

A

C3-C6

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3
Q

roll of hyoid on larynx

A

hold up the larynx

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4
Q

3 regions of the larynx

A

Vestibule
Ventricle(between the folds of the larynx)
Infraglottic

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5
Q

the laryngeal cartilages

A

(9)
unpaired: epiglottis, thyroid cartilage, cricoid cartilage
Paired: arytenoid cartilage, corniculate cartilage, cuneiform cartilage

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6
Q

what are laryngeal cartilages made of

A

hyaline cartilage (except for epiglottis which is elastic)

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7
Q

what holds the epiglottis to the thyroid

A

thyro-epiglottic ligament

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8
Q

the 2 large flat parts of the thyroid cartilage that fuse together at the anterior midline

A

lamina

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9
Q

the adam’s apple

A

laryngeal prominence

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10
Q

roll of superior and inferior horns of the thyroid cartilage

A

anchor it to hyoid or articulate with the cricoid cartilage

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11
Q

shape of the cricoid cartialge

A

ring with thick lamina (posterior) and thin arch (anterior)

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12
Q

where the cricoid cartilage and the thyroid cartilage meet

A

at the cricothyroid joint (small synovial joint)

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13
Q

importance of the cricothyroid joint

A

tilt thyroid to tighten vocal cords

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14
Q

main motor for the larynx

A

recurrent laryngeal nerve (branch of vagus)

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15
Q

where the recurrent laryngeal nerve becomes the inferior laryngeal nerve

A

at the cricothyroid joint

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16
Q

what sits onto of the cricoid cartilage

A

arytenoid cartilage

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17
Q

where muscles attach on the arytenoid cartilage

A

on the posterior muscular process(broad)

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18
Q

where the vocal cords attach on the arytenoid cartilage

A

on the thin, anterior vocal process

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19
Q

where are the corniculate and cuneiform cartilages

A

corniculate: on the arytenoid cartilage
Cuneiform: in ligament

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20
Q

extrnisic ligaments of the thyroid

A

thyrohyoid membrane: lateral thyrohyoid ligament(2) and medial thyrohyoid lig
Cricotracheal lig.
Hyo-epiglottic lig.

21
Q

intrinsic ligaments of the larynx

A

cricothyroid lig: vocal ligament, median cricothyroid lig

Quadrangular membrane: vestibular lig

22
Q

what covers the structures of the larynx

A

mucous membrane

23
Q

difference between vocal fold, vestibular fold and the vocal and vistibular ligament

A

fold have the mucous membrane covering it

24
Q

what is the quadrangular membrane covered in mecus membrane

A

aryepiglottic fold

25
Q

relation of the vestibular ligmaent and the vocal ligaments

A

vestibular is superior and slightly lateral

26
Q

the space between the vestibular fold

A

rima vestibuli

27
Q

the space between the vocal fold

A

rima glottidis

28
Q

what innervates the larynx muscles

A

inferior laryngeal n(except cricothyroid muscle: external laryngeal n)

29
Q

parts of the the cricothyroid muscle

A

lateral: oblique portion
medial: straight portion

30
Q

roll of ciricothyroid cartilage

A

pulls on the thyroid cartilage to tighte the vocal cords

31
Q

muscle of the internal larynx

A 
vocalis m
lateral crico-arytenoid m
posterior crico-arytenoid m
oblique arytenoid m
transverse arytenoid m
32
Q

action of the posterior crico-arytenoid

A

opens the rima glottidis (the only muscle that does

33
Q

what do all larynx musculature do to the vocal cords except posterior ciroco-arytenoid m

A

tightens or close the rima glottidis

34
Q

what larynx muscle is esential to maintaining an open airway

A

posterior cryoarytenoid mm

35
Q

the spasmodic closure of glottis (life threatening

A

laryngospasm

36
Q

cause of spasm of laryngeal mm

A

iritating cheical

pharmaceutical side effects…

37
Q

what does the superior laryngeal a supply

A

the upper larynx

38
Q

the superior laryngeal a branches from

A

superior thyroid a

39
Q

what does the superior laryngeal a run with

A

internal laryngeal n

40
Q

what does the inferior laryngeal a suppy

A

the lower larynx

41
Q

what does the inferior laryngeal artery branch from

A

inferior thyroid a from the thyrocervical trunk

42
Q

what does the inferior laryngeal a travel with

A

inferior laryngeal n

43
Q

the superior laryngeal n gives rise to

A

internal laryngeal n

external laryngeal n

44
Q

what nerve pierces the thyrohyoid membrane

A

internal laryngeal n

45
Q

what nerve circles the aorta or subclavian a

A

recurrent laryngeal n

46
Q

the recurrent laryngeal n becomes

A

the inferior laryngeal n posterior to the cricothyroid joint

47
Q

injury to internal laryngeal nn cause

A

sensory loss to superior larynx (enable food to more easily enter larynx

48
Q

injury to inferior laryngeal nn leads to

A

paralyzes mm ipsilateral and paparlysis of vocal fold ipsilateral
hoarseness as vocal folds cannot meet in midline
bilateral loss is total loss of voice

Anatomy exam 5 (18 decks)

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