larynx basic info

Question 1

what are the functions of the larynx?

Answer 1

1 prevent passage of food into airway during swallowing
2 regulates flow of air into lungs
3 functions in vocalization

Question 2

the low larynx is directly associated with what?

Answer 2

speech

Question 3

what is the length of the larynx?

Answer 3

5cm and lies between C3 and C6

Question 4

what are the 5 cartilages of the larynx?

Answer 4

Thyroid
Cricoid
Arytenoid 
Corniculate 
Cuneiform

Question 5

what does structures does the thyroid cartilage present?

Answer 5

Superior thyroid notch
Inferior thyroid notch 
Laryngeal prominence
Superior horn
Inferior horn- articulates wit cricoid 
Laminae 
Oblique line

Question 6

the oblique line of the thyroid cartilage provides attachment for what?

Answer 6

Inferior constrictor
Sternothyroid
Thyrohyoid muscles

Question 7

where does the cricoid cartilage end?

Answer 7

C6, where trachea begins

Question 8

what is the shape of the cricoid cartilage?

Answer 8

signet ring

Question 9

which is the most inferior of the laryngeal cartilages?

Answer 9

cricoid cartilage

Question 10

what is the shape of the epiglottic cartilage and where does it lie?

Answer 10

spoon shaped and it lies behind the root of the tongue and body of hyoid bone

Question 11

what is the shape of the cricoid cartilage?

Answer 11

it consists of a narrow anterior arch and a broad, posterior lamina

Question 12

the lower end of the epiglottic cartilage is attached to the back of the laryngeal prominence of the thyroid cartilage by what?

Answer 12

thyroepiglottic ligament

Question 13

arytenoid cartilages are what type of cartilages and what is their shape?

Answer 13

it is a paired cartilage with a pyramidal shape

Question 14

what are the 2 processes of the arytenoid cartilage?

Answer 14

vocal process- vocal ligament

muscular process- intrinsic muscles

Question 15

what are the 2 joints of the larynx?

Answer 15

cricothyroid joint
cricoarytenoid joint

both synovial mobile

Question 16

what type of joint is the cricothyroid joint?

Answer 16

hinge/ginglymis

Question 17

what is the function of the cricoarytenoid joint?

Answer 17

moves vocal cords by moving arytenoid cartilage

Question 18

what are the ligaments of the larynx?

Answer 18

Thyrohyoid membrane
Median cricothyroid ligament 
Vocal ligament
Conus elasticus 
Quadrangular membrane

Question 19

which is the ligament that vibrates to produce sound?

Answer 19

vocal ligament

Question 20

what does the quadrangular membrane connect?

Answer 20

connects the epiglottic cartilage to the arytenoid cartilage on each side

Question 21

what are the margins of the quadrangular membrane?

Answer 21

superior- aryepiglottic ligament w/in fold

inferior- vestibular ligament w/in fold

Question 22

what are the 2 folds of the larynx and their alternate names?

Answer 22

Vestibular folds- false vocal cords

Vocal folds- true vocal cords

Question 23

which fold is protective in function and initiates cough reflex?

Answer 23

vestibular fold- false vocal cord

Question 24

what is the space between the vestibular folds called?

Answer 24

rima vestibuli

Question 25

what is the space between the vocal folds called? it is the narrowest part of the laryngeal cavity?

Answer 25

rima glottidis

Question 26

what structures do the vocal folds contain?

Answer 26

vocal ligament | vocalis muscle

Question 27

what is the name of the rima glottidis and vocal folds combined?

Answer 27

glottis

Question 28

what are the 3 cavities of the larynx?

Answer 28

Laryngeal vestibule Laryngeal ventricles Infraglottic cavity

Question 29

which cavity extends from the laryngeal inlet to the vestibular folds?

Answer 29

laryngeal vestibule

Question 30

which cavity lies between the vestibular folds and vocal folds?

Answer 30

laryngeal ventricles

Question 31

which cavity extends from the vocal folds to the inferior border of the cricoid cartilage?

Answer 31

infraglottic cavity

Question 32

what is the name for a small diverticulum within the laryngeal ventricle that contains glands which lubricate the vocal folds?

Answer 32

laryngeal saccule

Question 33

what is another name for the "oil can" of the vocal folds?

Answer 33

laryngeal saccule