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LECOM MS1 Gross Anatomy Exam 3 > Neck: Larynx > Flashcards

Neck: Larynx Flashcards

1
Q

What is the attachment of the oblique arytenoid muscles

A

Posterior surface of arytenoids to aryepiglottic fold

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2
Q

What is the action of the oblique arytenoid muscles

A

narrow the laryngeal inlet

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3
Q

What is the innervation of the oblique arytenoid muscle

A

recurrent laryngeal

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4
Q

What muscles will attach to the oblique line of the thyroid cartilage

A

inferior pharyngeal constrictor
sternothyroid
thyrohyoid

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5
Q

What type of cartilage is the epiglottis composed of

A

elastic cartilage

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6
Q

What are the extrinsic ligaments of the thyroid cartilage

A

thyrohyoid membrane
median thyrohyoid ligament
lateral thyrohyoid ligament
tritceal cartilage

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7
Q

What will travel through the hold in the thyrohyoid membrane

A

superior laryngeal artery

internal laryngeal nerve

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8
Q

What are the intrinsic ligaments of the cricoid cartilage

A

cricothyroid membrane

quadrangular membrane

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9
Q

What structures will form the cricothyroid joint

A

inferior horns of thyroid cartilage and cricoid cartilages

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10
Q

What type of joint is the cricothyroid joint

A

synovial joint

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11
Q

How will movement at the cricothyroid joint affect the vocal ligament

A

thyroid cartilage rocks

tilting forward elongates the vocal ligament: increases pitch

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12
Q

What structures form the cricoarytenoid joint

A

arytenoid cartilages

cricoid cartilage

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13
Q

What type of joint is the cricoarytenoid joint

A

synovial joint

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14
Q

What movements are seen at the cricoarytenoid joint

A

sliding mediolaterally
rotation
abduction
adduction of vocal ligaments

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15
Q

What is the outlet of the larynx continuous with

A

trachea

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16
Q

WHere is the vestibule of the larynx found

A

between inlet and vestibular folds

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17
Q

Where is the infraglottic space found

A

between vocal folds and the outlet

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18
Q

Where are the ventricles of the larynx found

A

bulging out laterally between the vestibular and vocal folds

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19
Q

What is the rima vestibulle

A

space between the two vestibular folds

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20
Q

What is the rima glottis

A

opening between the vocal folds

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21
Q

What is the function of the cricothyroid muscle

A

increases pitch of the voice

causes forward tilting of the thyroid cartilage, thus elongating the vocal cord
tightens vocal cords

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22
Q

What is the innervation of the cricothyroid muscle

A

external laryngeal n

23
Q

What is the innervation of the posterior cricoarytenoid muscles

A

recurrent laryngeal n

24
Q

What is the action of the posterior cricoarytenoid muscles

A

abduction and external rotation of the arytenoids

opens the rima glottis

25
Q

What is the action of the lateral cricoarytenoid muscles

A

internal rotation of the arytenoids

closing of rima glottis

26
Q

What is the innervation of the lateral cricoarytenoid muscles

A

recurrent laryngeal branch

27
Q

What are the attachments of the vocalis muscle

A

vocal processes of arytenoids, vocal ligament, thyroid angles

28
Q

What is the action of the vocalis muscle

A

adjust tension of the vocal folds

29
Q

What is the innervation of the vocalis muscle

A

recurrent laryngeal branch

30
Q

What is the attachment of the transverse arytenoid muscle

A

posterior surfaces of arytenoids

31
Q

What is the function of the transverse arytenoid muscle

A

adduction of the arytenoids

32
Q

What is the innervation of the transverse arytenoid muscle

A

recurrent laryngeal branch

33
Q

What is the attachment of the thyroarytenoid muscles

A

thyroid angle, arytenoid cartilages, aryepiglottic folds

34
Q

What is the action of the thyroarytenoid muscles

A

narrows larngeal inlet and vestibule

35
Q

What is the innervation of the thyroarytenoid muscles

A

recurrent laryngeal branch

36
Q

What is function of cricothyroid

A

stretches the vocal cords

37
Q

What is the function of posterior cricoarytenoid

A

opens the rima glottis

38
Q

What is the function of lateral cricoarytenoid

A

closes the rima glottis

39
Q

What is function of vocalis

A

tenses vocal cord

40
Q

What is the function of oblique and transverse arytenoids

A

closure of rima glottis

41
Q

What is function of thyroarytenoidus

A

constriction of vestibule

42
Q

What are the main arteries that will supply the laryynx

A

superior laryngeal
superior thyroid artery
inferior laryngeal artery

43
Q

What are the main veins that will drain the larynx

A

superior middle and inferior thyroid veins

44
Q

What are the branches of the superior laryngeal nerve

A

internal laryngeal

external laryngeal

45
Q

What does the internal laryngeal nerve innervate

A

laryngeal cavity down to the vocal folds (sensory)

46
Q

What does the external laryngeal nerve innervate

A

cricothyroid muscle and inferior pharyngeal constrictor

47
Q

What do the recurrent laryngeal nerves innervate

A

all the laryngeal muscles except the cricothyroid muscle

supplies laryngeal cavity below the vocal folds (sensory)

48
Q

Where is the hyoid bone found

A

C3-C5 when standing

49
Q

What fascia is the larynx covered by

A

superficial and pretracheal fascia

50
Q

What structures around the larynx are palpable

A

laryngeal prominence
cricoid cartilage
cricothyroid ligament

51
Q

What is the clinical significance of the piriform recess

A

common place for things to get lodged

52
Q

What nerve is found in the area of the piriform recess

A

internal laryngeal nerve lies under the mucosa

53
Q

What is the lymphatic drainage of the larynx

A

suprglottic: Level II
infraglottic: lower deep cervical IV, prelaryngeal, pretracheal

54
Q

What layers will be cut in a tracheotomy

A 
skin
superficial fascia
investing fascia
infrahyoid fascia
pretracheal fascia

LECOM MS1 Gross Anatomy Exam 3 (17 decks)

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