Lecture 2

Question 1

What cell types are in the larynx

Answer 1

Stratified squamous epithelium

Smooth muscle

Connective tissues

Question 2

What is the length of the larynx in males and females

Answer 2

Males 44mm

Females 36mm

Question 3

Transverse diameter in males and females

Answer 3

Males 43mm

Females 41mm

Question 4

Antero posterior diameter in males and females

Answer 4

Males 36mm

Females 26mm

Question 5

Circumference in males and females

Answer 5

Males 136mm

Females 112mm

Question 6

How many cartilages are in the larynxy

Answer 6

9 in total

1 Epiglottis
1 thyroid 
1 cricoid
2 corniculate
2 cuneiform
2 arytenoids

Question 7

What ligaments are in the larynx

Answer 7

Internal hyothyroid
Middle cricothyroid
Hyothyroid membrane
Posterior crico arytenoid

Question 8

What are the 5 intrinsic muscles of the larynx

Answer 8

Cricothyroidus

Cricoarytenoideus lateralis

Cricoarytenoideus posterior

Arytenoideus

Thyroarytenoideus

Question 9

What does the cricothyroidus do

Answer 9

Lengthens and tenses vocal folds

Question 10

What does the cricoarytenoideus lateralis

Answer 10

Addicts and internally rotates arytenoid cartilage

Question 11

What does the cricoarytenoideus posterior do

Answer 11

Abducts and externally rotates arytenoid cartilage

Question 12

What does arytenoideus do

Answer 12

Narrows laryngeal inlet by constricting distance between arytenoid cartilages

Question 13

What does the thyroarytenoideus do

Answer 13

Shortens the vocal folds and lowers pitch

Question 14

Where does the Larynx develop from

Answer 14

Second part of the foregut