Larynx Flashcards
function of laryngeal cartilage
1) primarily phonation
2) passageway of air
3) protective framework of passage
found at C3
hyoid bone
found at C5
adam’s apple aka laryngeal protuburance
found at C6
cricoid cartilage
why is men’s voice lower?
due to testosterone, men will develop a sharp angle of laryngeal prominence which lengthens or increases tension of vocal ligaments to lower pitch
What passes through the hole of thyrohyoid membrane?
• Internal branch of superior laryngeal nerve for SENSORY ABOVE vocal fold
o Internal laryngeal nerve
• Superior laryngeal artery and vein
3 points of artenoid cartilage
1) apex= tip, most superior point, articulates with corniculate
2) muscular process= most lateral point (outside tube/ring), attaches mucus
3) vocal process= most anterior point (points INSIDE tube), attaches vocal ligaments to anterior part of thyroid cartilage
• muscular process and vocal process is functional
Vestibular ligament
- Above vocal ligament
- NO SOUND
- Used for protection
Vocal ligament
- Below vestibular
* What actually vibrates against each other to produce sound
Piriform recess
Pocket where most foreign stuff gets STUCK (if it isn’t in esophagus or trachea)
Laryngeal ventricle
Space between vestibular fold and vocal fold
aryepiglottic fold
found on top of apiglottic cartilage, quadrangular membrane, cuneiform cartilage
- place ET tube here
- guest speaker
arytenoid cartilage has what motions
- sliding= move apart or together and impacts breathing and space
- swivel= abduct and adduct the vocal ligaments
- hinge= tilt anterior or posterior at the cricothyroid joint
effects of movements
1) changing length/tension of vocal ligaments
2) opening/closing the rima glottides
rima glottidis
• space between vocal ligaments and arytenoid cartilages leading to trachea, opens and closes airway
rima glottidis at normal respiration
• space between vocal ligaments and arytenoid cartilages leading to trachea
• opens and closes airway
*Be sure to remind yourself on different positioning for whispering, phonation and breathing
Le Fort Fracture 1
horizontal from lateral angle of piriform aperture to pterygoid processes
Le Fort Fracture 2
along nasofrontal suture, inferomedial orbital rim, maxillary antrum, pterygoid processes
Le Fort Fracture 3
nasofrontal suture, frontomaxillary suture, frontozygomatic suture, including floor of orbit and nasal septum, to ptyergoid processes
rima glottidis at forced respiration
two movements
1) abducts vocal ligs to open
2) slide arty cart laterally to open larengeal inlet more
rima glottidis at phonation
very lil space
* artyenoids cart will be back to gether so vocal ligaments can vibrate
rima glottidis at whispering
only adduct vocal ligs so they can still vibrate
*only air passes thru artenoid cart
laryngeal inlet is?
rima glottidis
