voice: laryngeal anatomy

Question 0

Hyoid parts

Answer 0

Corpus
Lesser Cornu
Greater Cornu

Question 1

Adjacent structures

Answer 1

Trachea

Hyoid bone

Question 2

Cartilages

Answer 2

Thyroid, cricoid, arytenoid, corniculate, cuneiform

Question 3

Cricoid Joints

Answer 3

Cricothyroid, Cricoarytenoid

Question 4

Cricothyroid joint

Answer 4

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

Question 5

Cricoarytenoid joint

Answer 5

Allows arytenoids to pivot, so VF cab abduct or adduct

Question 6

Arytenoid cartilage

Answer 6

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

Question 7

Corniculate cartilage

Answer 7

On top of arytenoids

Question 8

Cuneiform cartilage

Answer 8

In aryepiglottic folds

Question 9

Extrinsic Muscles of larynx

Answer 9

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

Question 10

Geniohyoid

Answer 10

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

Question 11

Anterior digastric

Answer 11

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

Question 12

Posterior digastric

Answer 12

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

Question 13

Stylohyoid

Answer 13

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

Question 14

Thyrohyoid

Answer 14

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

Question 15

Omohyoid

Answer 15

Origin- scapula
Insert- greater Cornu
Fn- depress hyoid

Question 16

Sternohyoid

Answer 16

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

Question 17

Sternothyroid

Answer 17

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

Question 18

Mylohyoid

Answer 18

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

Question 19

Intrinsic muscles of the larynx

Answer 19

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

Question 20

Thyroarytenoid: thyromuscularis

Answer 20

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

Question 21

Thyroarytenoid: thyrovocalis

Answer 21

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

Question 22

Interarytenoid: transverse

Answer 22

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

Question 23

Interarytenoid- oblique

Answer 23

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

Question 24

Cricothyroid: pars recta

Answer 24

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

Question 25

Cricothyroid: pars oblique

Answer 25

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

Question 26

Intrinsic Membranes & ligaments

Answer 26

Cricothyroid membrane or conus elasticus; quadrangular membrane

Question 27

Extrinsic membranes and ligaments

Answer 27

Crichotracheal, hyothyroid (medial and lateral)

Question 28

Conus elasticus (cricothyroid membrane)

Answer 28

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)

Question 29

Quadrangular membrane

Answer 29

1) Superior- aryepiglottic folds (2) Anterior- lateral to epiglottis and thyroid notch (3) Posterior- corniculates (4) Inferior- ventricular folds

Question 30

Posterior cricoarytenoid muscle

Answer 30

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

Question 31

Lateral cricoarytenoid

Answer 31

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