Larynx: Single Cartilages

Question 1

Single cartilages

Answer 1

1. Thyroid
2. Cricoid
3. Epiglottis

Question 2

Thyroid lamina

Answer 2

1. Consists of 2 quadrilateral lamina
2. Lamina is fused anterior forming angle about 90 degrees in males and 120 degrees in females
3. Fused anterior borders from laryngeal prominence (Adam’s apple)

Question 3

Thyroid lamina borders

Answer 3

1. Upper border
2. Lower border

Question 4

Thyroid lamina upper border

Answer 4

Shows V-shaped depression in median plane (thyroid notch)

Question 5

Thyroid lamina posterior border

Answer 5

1. Free
2. Extends upwards and downwards as superior and inferior horns
3. Lamina outer surface shows oblique line

Question 6

Circoid

Answer 6

1. Signet ring shaped
2. Consisted of narrow arch anterior and broad quadrants lamina posterior
3. Forms 2 synovial joints with inferior horns thyroid and arytenoid cartilages

Question 7

Epiglottis

Answer 7

Lead like plate of elastic fibrocartilage lying behind tongue root

Question 8

Epiglottis parts

Answer 8

1. Upper border
2. Lower part
3. Sides
4. Anterior surface
5. Posterior surface

Question 9

Upper border

Answer 9

1. Free
2. Broad
3. Rounded

Question 10

Lower part

Answer 10

Forms long narrow stalk attached to thyroid angle inner surface by thyroepiglottic ligament

Question 11

Sides

Answer 11

Attached to arytenoid cartilages by 2 aryepiglottic fold and Quadrangular membranes

Question 12

Anterior surface

Answer 12

1. Upper part:
   is connected to tongue posterior part by a median and 2 lateral glossoepiglottic folds
2. Lower part:
   is connected to hyoid body by hyoepiglottic ligament

Question 13

Posterior surface

Answer 13

1. Smooth
2. Concave
3. Covered with mucosa