larynx Flashcards
where is the larynx located
Base of the tongue (C3) to the trachea (C6)
functions of larynx
air passage linking pharynx to trachea
phonation
Sphincter preventing food entering the air passage ~ trachea
Walls of larnyx
➢ Support cartilages
➢ Interconnecting ligaments
➢ Intrinsic/extrinsic muscles
➢ Mucosal lining
RELATIONS OF LARYNX
superficial surface
covered by sternohyoid and sternothyroid (2 infrahyoid muscles)
RELATIONS OF LARYNX
posterior to larynx
Medial surface of thyroid lies against
oesphagus
lateral side of larynx and upper trachea
RELATIONS OF LARYNX
The superior thyroid artery and external laryngeal nerve lie
The recurrent laryngeal nerve lies
medial to the superior pole of thyroid
medial to the inferior pole
- larynx composed of …
- what do Intrinsic and extrinsic muscles do
- 9 pieces of cartilage; 3 large single and 3 smaller paired portions
- adjust position and tension
3 single cartilages
thyroid cartilage
cricoid cartilage
epiglottis
1)Thyroid cartilage (TC)
fused …
anteriorly to form laryngeal prominence (LP)
2)cricoid cartilage
contains
location
attached to first ring of trachea by
lamina and arcg
C6
cricotracheal ligament
3)epiglottis
function
attached to hyoid bone by
attached to thyroid bone by
allows flexibility
hyoepiglottic ligament
thyroepiglottic ligament
3 paired cartilages in larynx
arytenoid
corniculate
cuneiform
2) Corniculate cartilages location
3) Cuneiform Cartilages location
Sitting on aryepiglottic folds
Located in Aryepiglottic folds …close to tubercle of the epiglottis
when the larynx is closed during swallowing
internal ligaments and membranes of larynx
vocal ligaments- connect arytenoid cartilage to thyroid cartilage
Cricothyroid Membrane- connects cricoid cartilage to vocal ligament
external ligaments and membranes of larynx
thyrohyoid membrane - connects thyroid cartilage to hyoid bone
cricothyroid ligament - connects arch of cricoid membrane with thyroid cartilage
