Muscles Of The Larynx

Question 1

Intrinsic muscles of the larynx

Answer 1

M. Cricothyroideus
M. Cricoarytenoideus dorsalis
M. Cricoarytenoideus lateralis
M. Arytenoideus transversus
M. Thyroarytenoideus

Question 2

M.cricothyroideus

Answer 2

(Ventral)
O: Cricoid lamina

I: Thyroid lamina

A: tenses vocal folds

Innervated by: n.laryngeus cranialis

Question 3

M.cricoarytenoideus dorsalis

Answer 3

O: cricoid lamina

I: proc. Muscularis

A: widens the glottis

Innervation: N.laryngeus caudalis seu recurrens

Question 4

M.cricoarytenoideus lateralis

Answer 4

O: Cricoid arch

I: processus muscularis

A: closes or narrows the glottis

Innervation: n. Laryngeus caudalis seu reccurens.

Question 5

M. Arytenoideus transversus

Answer 5

O: Proc muscularis of arytenoid cartilage

I: Proc. Muscularis of the contralateral cartilage

A: narrows the glottis

Innervation: N. Laryngeus caudalis seu recurrens

Question 6

M. Thyroarytenoideus

Answer 6

O: Base of the epiglottis and thyroid cartilage

I: Proc. Muscularis AND proc. Vocalis of arytenoid cartilage

A: Narrows the glottis

Innervation: N. Laryngeus caudalis seu recurrens

Question 7

M.thyroarytenoideus

In ca and eq

Answer 7

In ca, Eq: M.venteicularis is the rostral part of the thyroarytenoid Muscle .

In ca and Eq: M.Vocalis from thyroid cartilage and lig. Cricothyroideum to Proc.vocalis.

A: narrows the glottis
Innervation: N. Laryngeus caudalis seu recurrens

Question 8

Extrinsic muscles of the Larynx

Answer 8

= Long muscles of the hyoid bone
O: Sternum
A: Draws Larynx caudaly

Muscles originating from HYOID APPARATUS= Draws larynx Rostrally