Larynx

Front 1

Larynx Location/Relationships

Back 1

in muscular triangle at vertebral levels C3-C6; anterior to pharynx

Front 2

Supraglottic Space

Back 2

from inlet (aditus) to vestibular folds (false vocal cords)

Front 3

Ventricle

Back 3

from vestibular folds (false vocal cords) to vocal folds (true vocal cords)

Front 4

Infraglottic Space

Back 4

from vocal folds (true vocal cords) to lower border of cricoid cartilage

Front 5

Back 5

1. epiglottis
2. vestibular fold (false vocal cord)
3. ventricle (space b/w false & true vocal cords)
4. vocal fold (true vocal cord)
5. rima glottis (space b/w tru vocal cords)
6. corniculate cartilage
7. cuneiform cartilage
8. glottis

Front 6

Thyrohyoid Membrane
-Bound to?

Back 6

binds inferior edge of hyoid bone to superior edge of thyroid cartilage

Front 7

Cricothyroid Membrane
-Made of?
-Bound to?
-Helps form?

Back 7

-made of median and lateral cricothyroid ligs.
-binds cricoid and thyroid cartilages
-helps form conus elastus

Front 8

Quadrangular Membrane
-Location?
-Forms?

Back 8

-extends b/w epiglottic and arytenoid cartilages
-inferior edge forms vestibular ligament

Front 9

Conus Elastus
-Formed by?
-Connects which structures?
-Forms?

Back 9

-formed by: median & lateral cricothyroid ligs. (which form the cricothyoid mb); vocal ligaments
-connects cricoid cartilage q/ vocal ligs.
-forms roof of infraglottic space

Front 10

Lateral Cricoarytenoid M.

Back 10

I: recurrent laryngeal n. (BM fibers)
A: adduction of vocal ligs.

Front 11

Transverse & Oblique Arytenoid Ms.

Back 11

I: recurrent laryngeal n. (BM fibers)
A: adduction of vocal ligs.

Front 12

Posterior Cricoarytenoid M.

Back 12

I: recurrent laryngeal n. (BM fibers)
A: abduction of vocal ligs.

Front 13

Vocalis & Thyroarytenoid Ms.

Back 13

I: recurrent laryngeal n. (BM fibers)
A: relaxation of vocal ligs.

Front 14

Cricothyroid M.

Back 14

I: external laryngeal n. (BM fibers) (off superior laryngeal n.)
A: increase tension of vocal ligs.

Front 15

General Innervation of the Larynx
(Nerves/Fibers)

Back 15

-CN X: VE-para/pre; VA
-CN XI via X: BM to ms. of larynx

Front 16

Superior Laryngeal N.
-Branches?
-Fibers? To where?

Back 16

-internal laryngeal n.: VE-para/pre & VA to mucosa & mucous glands above vocal fold
-external laryngeal n.: BM to cricothyroid m.

Front 17

Recurrent Laryngeal N.
-Fibers? To where?

Back 17

-VE-para/pre & VA to mucosa and mucous glands below the vocal folds
-BM to all intrinsic laryngeal ms. except cricothyroid

Front 18

Superior Laryngeal A. & V.
-Origin?
-Route/Supplies?

Back 18

-origin: superior thyroid a. & v.
-route: travels w/ internal laryngeal n. & pierces thyrohyoid mb to supply larynx above the vocal folds

Front 19

Inferior Laryngeal A. & V.
-Origin?
-Route/Supplies?

Back 19

-origin: inferior thyroid a. & v.
-route: slides thru gap #4 w/ recurrent laryngeal n. to supply larynx below the vocal folds