Larynx

Question 1

Laynx connects?

Answer 1

Lower part of pharynx to trachea

Question 2

Larynx functions

Answer 2

1. Prevent choking

2. Vocalization

Question 3

Lyngeal cc. connections

Answer 3

Cr: hyoid b.

Cd: trachea

Question 4

4 cc. of larynx

Answer 4

1. Arytenoid c.
2. Thyroid c.
3. Cricoid c.
4. Epiglottic c.

Question 5

Epiglottic c. during swallowing?

Answer 5

Tilts backward to partially cover opening of larynx

Question 6

Largest c. of larynx

Answer 6

Thyroid c.

Question 7

Thyroid c. is open on which side?

Answer 7

Dorsally

Question 8

Oblique line of thyroid c. is insertion for?

Answer 8

Sternothyroideus m.

Question 9

Cr. laryngeal n. and a. pass through?

Answer 9

Rostral thyroid notch

Question 10

Which side of cricoid c. is wider?

Answer 10

Dorsal > ventral

Question 11

Lamina of cricoid c.

Answer 11

Expanded dorsal part with median crest (for m. attachment)

Question 12

Articular facets of cricoid c.

Answer 12

1. Cricoarytenoid articulation (rostral border of lamina)

2. Cricothyroid articulation (junction of lamina and arch)

Question 13

Only paired laryngeal c.

Answer 13

Arytenoid c.

Question 14

Attachments to cuneiform process

Answer 14

Vestibular lig. and m.

Question 15

Attachments of vocal process

Answer 15

Vocal lig. and vocalis m.

Question 16

Laryngeal cavity is divided into what 3 transverse segments?

Answer 16

1. Vestibule (rostral to glottis)
2. Rima glottidis (middle, narrow)
3. Infraglottic cavity (cd. to glottis)

Question 17

Rima glottidis aka?

Answer 17

Glottic cleft

Question 18

Vestibule of larynx extends from ? to ?

Answer 18

Laryngeal inlet to vestibular fold

Question 19

Vestibule of larynx opens freely where?

Answer 19

Dorsorostrally

Question 20

Laryngeal inlet lies?

Answer 20

Directly cd. to intrapharyngeal ostium

Question 21

Borders of laryngeal inlet

Answer 21

Lateral: epiglottis

Cd: right and left aryeopiglottic folds

Question 22

Vestibular fold extends from ? to ?

Answer 22

Cuneiform process to thyroid c.

Question 23

Glottis consists of?

Answer 23

1. Arytenoid c.

2. Vocal fold

Question 24

Narrowest part of laryngeal passageway

Answer 24

Rima glottidis

Question 25

2 parts of rima glottidis

Answer 25

1. Intercartilagenous part | 2. Intermembranous part

Question 26

Intercartilagenous part of rima glottidis is located between?

Answer 26

Medial surfaces of arytenoid cc.

Question 27

Intermembranous part of rima glottidis is located between?

Answer 27

Vocal folds

Question 28

Vocal folds extend from ? to ?

Answer 28

Vocal process of arytenoid c. to thyroid c.

Question 29

Vocal folds located?

Answer 29

Cd. to laryngeal ventricle

Question 30

Infraglottic cavity extends from ? to ?

Answer 30

Glottic cleft to beginning of trachea

Question 31

Infraglottic cavity is wide on which side?

Answer 31

Dorsally > narrow

Question 32

infraglottic cavity is entirely contained within?

Answer 32

Cricoid c.

Question 33

2 major ligs. of larynx

Answer 33

1. Cricotracheal lig. | 2. Cricothyroid lig.

Question 34

4 extrinsic mm. of larynx

Answer 34

1. Thyrohyoideus m. 2. Sternothyroideus m. 3. Thyropharyngeus m. 4. Cricopharyngeus m.

Question 35

Extrinsic mm. connect?

Answer 35

Larynx with hyoid b., pharynx and sternum

Question 36

Intrinsic mm. of larynx

Answer 36

Pass from one c. to another and move them in relation to each other

Question 37

Function of intrinsic mm. of larynx

Answer 37

1. Widen and narrow glottic cleft | 2. Tens and relax vocal fold

Question 38

Cricothyroideus m. action and innervation

Answer 38

A: tense vocal fold I: cr. laryngeal n.

Question 39

Cricoarytenoideus dorsalis m. action and innervation

Answer 39

A: main abductor of arytenoid c. I: cd. laryngeal n.

Question 40

Cr. laryngeal n. only innervates?

Answer 40

Cricothyroideus m.

Question 41

Cricoarytenoideus lateralis m. action and innervation

Answer 41

A: closes glottic cleft I: cd. laryngeal n.

Question 42

Thyroarytenoideus m. action and innervation

Answer 42

A: relax vocal fold, constrict glottis I: cd. laryngeal n.

Question 43

Thyroarytenoideus m. is divided into?

Answer 43

Ventricularis and vocalis mm.

Question 44

Ventricularis m.

Answer 44

Rostral division, constricts glottis and dilates laryngeal saccule

Question 45

Vocalis m.

Answer 45

Medial division, lies inside vocal fold with vocal lig. and draws arytenoid c. (to relax vocal fold)

Question 46

Arytenoideus transversus m. action and innervation

Answer 46

A: constrict glottis I: cd. laryngeal n.

Question 47

Cd. laryngeal n. innervates?

Answer 47

1. Cricoarytenoideus m. (dorsalis and lateralis) 2. Thyroartenoideus m. 3. Arytenoideus transversus m. All intrinsic mm. of larynx except cricothyroid m.

Question 48

Blood supply of larynx

Answer 48

Cr. laryngeal a.

Question 49

Cr. laryngeal a. is a drect branch from?

Answer 49

External carotid a.

Question 50

Cr. laryngeal a. runs ventrally with?

Answer 50

Cr. laryngeal n.

Question 51

Cr. laryngeal a. supplies?

Answer 51

Most of the mucosa and intrinsic mm. of larynx

Question 52

Larynx is innervated by brahces of?

Answer 52

Vagus n. (cr. laryngeal and cd. laryngeal)

Question 53

Cr. laryngeal n. leaves vagus at level of?

Answer 53

Distal ganglion of vagus (nodose ggl.)

Question 54

Branches of cr. laryngeal n.

Answer 54

External and internal branches

Question 55

External br. of cr. laryngeal n. innervates?

Answer 55

Cricothyroid m.

Question 56

Internal b. of cr. laryngeal n. innervates?

Answer 56

Mucosa

Question 57

Cd. laryngeal n. is the terminal segment of?

Answer 57

Recurrent laryngeal n.