Laryngeal anatomy Flashcards
(23 cards)
What vertebrae does the adult larynx lie anterior to?
C3-C6
How many cartilages make up the larynx?
9
How many of the laryngeal cartilages are paired?
3
Name the paired cartilages
- Corniculate
- arytenoid
- cuneiform
Name the unpaired cartilages
- epiglottis
- thyroid
- cricoid
What is the only bone in the body that does not articulate with another bone?
Hyoid bone
What are the two ligaments associated with laryngeal anatomy
- thyrohyoid ligament
- cricothyroid ligament
What structure forms the main support of the larynx
hyoid bone
What ligament attatches the larynx to the hyoid bone?
thyrohyoid ligament
What are two instances where you need to place a needle through the cricothyroid ligament (membrane)
1.Performing a cricothyroidotomy
2.performing a transtracheal block
what ligament connects the epiglottis to the thyroid cartilage?
thyroepiglottic ligament
what cartilage helps provide structure and protection to the larynx
thyroid
What is the most caudal unpaired cartilage
cricoid cartilage
what unpaired cartilage forms a full ring
cricoid
what paired cartilage forms a ball and socket joint with the cricoid cartilage
arytenoids
Which paired cartilage is more lateral -> corniculate or cuneiform
cuneiform
what structure is at risk of limited movement when the patient has RA or SLE
arytenoid cartilages
for adults what is the most narrow region of the airway
glottic opening
for peds (less than 5 years) what is the most narrow fixed region of the airway?
cricoid ring
for peds (less than 5 years) what is the most narrow dynamic region of the airway?
vocal cords
