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voice > voice: laryngeal anatomy > Flashcards

voice: laryngeal anatomy Flashcards

0
Q

Hyoid parts

A

Corpus
Lesser Cornu
Greater Cornu

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1
Q

Adjacent structures

A

Trachea

Hyoid bone

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2
Q

Cartilages

A

Thyroid, cricoid, arytenoid, corniculate, cuneiform

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3
Q

Cricoid Joints

A

Cricothyroid, Cricoarytenoid

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4
Q

Cricothyroid joint

A

Inferior Cornu of thyroid articulates with cricoid, thyroid pivots forward and down, allowing VF to lengthen, thin, stretch, tense

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5
Q

Cricoarytenoid joint

A

Allows arytenoids to pivot, so VF cab abduct or adduct

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6
Q

Arytenoid cartilage

A

VF extend from vocal process to just below thyroid notch, pivots: vocal process moves laterally, muscular process moves posteriorly

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7
Q

Corniculate cartilage

A

On top of arytenoids

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8
Q

Cuneiform cartilage

A

In aryepiglottic folds

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9
Q

Extrinsic Muscles of larynx

A

Suprahyoids: geniohyoid, anterior digastric, posterior digastric, stylohyoid
Infrahyoids: thyrohyoid, omohyoid, sternohyoid, sternothyroid
Mylohyoid

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10
Q

Geniohyoid

A

Origin- mandibular symphysis
Insert- corpus
Fn- hyoid forward and up

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11
Q

Anterior digastric

A

Origin- mandibular symphysis
Insert- intermediate tendon
Fn- hypoid up and forward

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12
Q

Posterior digastric

A

Origin-mastoid
Insert- intermediate tendon
Fn- elevates up and back

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13
Q

Stylohyoid

A

Origin- styloid process of temporal bone, behind ear
Insert- corpus of hyoid
Fn- hyoid up and back

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14
Q

Thyrohyoid

A

Origin- thyroid lamina
Insert- greater Cornu hyoid
Fn- mediated by supra hyoids: if both contract, THYROID is pulled up, if not, HYOID is pulled down

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15
Q

Omohyoid

A

Origin- scapula
Insert- greater Cornu
Fn- depress hyoid

16
Q

Sternohyoid

A

Origin- sternum/clavicle
Insert- greater Cornu
Fn- depress hyoid

17
Q

Sternothyroid

A

Origin- sternum clavicle
Insert- THYROID LAMINA
Fn- depress hyoid

18
Q

Mylohyoid

A

Origin- mylohyoid line (mandibular symphysis to angle)
Insertion- corpus of hyoid
Fn- elevate hyoid, depress mandible

19
Q

Intrinsic muscles of the larynx

A

Thyroarytenoid (thyromuscularis, thyrovocalis), posterior Cricoarytenoid, lateral Cricoarytenoid, interarytenoid (transverse and oblique), cricothyroid (pars recta, oblique)

20
Q

Thyroarytenoid: thyromuscularis

A

Origin- thyroid notch
Insertion- muscular process of arytenoids
Fn- relax VF

21
Q

Thyroarytenoid: thyrovocalis

A

Origin- thyroid notch
Insert- vocal process of thyroarytenoids
Function- adductor

22
Q

Interarytenoid: transverse

A

Origin- lateral boundaries
Insertion- opposite lateral
Fn- tense, tight adduct

23
Q

Interarytenoid- oblique

A

Origin- muscular process
Insert- opposite apex
Fn- tight adduct

24
Q

Cricothyroid: pars recta

A

Origin- cricoid arch
Insert- thyroid lamina
Fn- thyroid forward down: lengthen thin approximate and tense VF

25
Q

Cricothyroid: pars oblique

A

Origin- cricoid arch
Insert- inferior Cornu of THYROID
FB- thyroid down: lengthen approximate tense thin VF

26
Q

Intrinsic Membranes & ligaments

A

Cricothyroid membrane or conus elasticus; quadrangular membrane

27
Q

Extrinsic membranes and ligaments

A

Crichotracheal, hyothyroid (medial and lateral)

28
Q

Conus elasticus (cricothyroid membrane)

A

membrane posterior AND ligament

(1) Ligaments at midline, membrane covet
(2) cricoid arch up to thryroid notch, then posteriorly covering middle true vocal folds (but not vocal/cricothyroid ligament)

29
Q

Quadrangular membrane

A

1) Superior- aryepiglottic folds
(2) Anterior- lateral to epiglottis and thyroid notch
(3) Posterior- corniculates

(4) Inferior- ventricular folds

30
Q

Posterior cricoarytenoid muscle

A

Origin: pql cricoid
Insertion: muscular process arytenoids
Fn: primary abductor

31
Q

Lateral cricoarytenoid

A

Origin-cricoid arch
Insertion- muscular process arytenoids
Fn- primary adductor

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