Larynx

Question 1

Larynx opens into the

Answer 1

Laryngo-pharynx (region just below oropharynx)

Question 2

Larynx compostion

Answer 2

Skeletal or cartilages held together by fibrous membranes

Question 3

Cricoid cartilage

Answer 3

Most inferior

Forms complete ring…like a signet ring

Question 4

Arytenoid cartilage…articulation and how it moves

Answer 4

Articulates with posterior of cricoid

Rotate around vertical axis like a saloon door because of synovial articulations

Question 5

2 process of arytenoid cartilage and what they do/location

Answer 5

Vocal process - anteriorly…attachment of vocal ligament

Muscular process - project posterolaterally

Question 6

Thyroid cartilage articulations and muscle attachment points

Answer 6

Inferior cornu - cricoid below
Superior cornu - muscular attachment site
Oblique line on lateral side for muscle attachment as well

Question 7

Laryngeal prominence formed from

Answer 7

Two lamina of the thyroid cartilage

Question 8

Epiglotis attachment

Answer 8

Upper anterior border of thyroid cartilage

Question 9

Epiglottis base is

Answer 9

Anteriorly

Question 10

Thyrohyoid membrane links together

Answer 10

Hyoid bone and thyroid cartilage

Neurovascular structures of larynx pass through here

Question 11

Cricothyroid membrane connects

Answer 11

Thyroid cartilage and cricoid cartilage

Swoopes up to join all 3 cartilages

Question 12

Vocal ligament formed from

Answer 12

Upper free border of cricothyroid membrane that extends from vocal process to thyroid cartilage

Question 13

Rima glotis

Answer 13

Space between true vocal cords (vocal ligaments covered with mucosa)

Question 14

Why is rima glotis closed?

Answer 14

To increase abdominal pressure

Question 15

Quadrangular membrnae

Answer 15

Spans gap between epiglottic and arytenoid cartilage

Question 16

Superior edge of quadrangular membrane

Answer 16

Aryepiglottic fold

Question 17

Laryngeal inlet boundaries formed from

Answer 17

Right and left aryepiglottic folds

Question 18

Lower free border of quadrangular membrane forms

Answer 18

Vestibular fold (false vocal cord)

Question 19

Ventricle of the larynx found

Answer 19

Between false and true vocal fold

Question 20

Extrinsic laryngeal muscles and innervation

Answer 20

Stabilize or move larynx as a whole 
Ansa cervicalis (generally)

Question 21

Intrinsic muscles of the larynx and innervatio

Answer 21

Alter positions of one part relative to another
Sometimes create sphincters to protect tract or raise pressure
Also adjuest vocal ligaments
CN 10

Question 22

Posterior cricoarytenoid muscle arises from and attaches to

Answer 22

Posterior aspect of cricoid cartilage and attaches to muscular process of arytenoid

Question 23

Functions of posterior cricoarytenoid muscle and innervation

Answer 23

Rotate the arytenoid process and abduct the vocal folds

Recurrent laryngeal branch of CN 10

Question 24

Cricothyroid muscle function and innervation

Answer 24

Puts tension on thyroid cartilage and raises pitch of voice

External laryngeal nerve

Question 25

Lateral cricoarytenoid muscle function and innervation

Answer 25

CN 10

Adducts vocal folds

Question 26

Transverse and oblqiue arytenoid muscles function and innervation

Answer 26

CN 10

Adducts vocal folds

Question 27

Vocalis runs along

Answer 27

True vocal fold

Attaches to vocal process of arytenoid

Question 28

Vocalis function and innervation

Answer 28

Adduction of vocal cords and also draws arytenoid cartilage anteriorly to relax vocal cords
CN 10

Question 29

Superior laryngeal nerve

Answer 29

Common motor and sensory trunk of the larynx

Question 30

Superior laryngeal nerve divides to

Answer 30

Internal and external laryngeal nerve

Question 31

Motor fibers of larynx innervation

Answer 31

Recurrent laryngeal except cirocthyroid

Cricothyroid - external laryngeal

Question 32

Pharynx vs. larynx CN innervations

Answer 32

Larynx - 10

Pharynx - 9 and 10

Question 33

Internal laryngeal nerve supplies sensory to…where does it run

Answer 33

Mucous membrane above true vocal folds

Pierces thyrohyoid membrane with superior laryngeal artery

Question 34

Recurrent laryngeal nerve supplies sensory to…where does it run?

Answer 34

Below true vocal folds

With inferior laryngeal artery

Question 35

Larynx blood supply

Answer 35

Superior laryngeal branch of superior thyroid artery from external carotid artery (1st branch)
Inferior thyroid artery from thyrocervical trunk from subclavian artery