ENT Throat Flashcards
where is the larynx?
in the pretracheal fascia of the neck
what vertebral level is the larynx?
between C4 and C6
what is the adams apple?
joining of thyroid cartilages
where are the arytenoid cartilages?
articulate with the cricoid cartilage posteriorly
what marks the entrance to the larynx?
epiglottis
pressing on the cricoid cartilage does what?
compresses oesophagus but opens airway (prevents regurg/aspiration)
what are vocal cords?
free borders of mucosa covered connective tissue in the larynx
what are false vocal cords?
arytenoid cartilage to epiglottis
what are true vocal cords?
vocal process of arytenoid cartilage to thyroid cartilage
what is the supply of the intrinsic muscles of the larynx?
CN10 (inferior laryngeal nerve)
what are tensors muscles? what do they do?
cricothyroid
increase pitch
what are relaxor muscles? what do they do?
Thyroarytenoid muscles
decrease pitch
what are adductors muscles? what do they do?
Lateral crico-arytenoid muscles
arytenoid muscles
make voice quiet
what are abductor muscles? what do they do?
Posterior Crico-arytenoid muscles
abducts vocal cords
what is the supply of the mucosa above the vocal folds?
internal laryngeal nerves
oblique band of arytenoid muscles
Thyroarytenoid muscles
transverse band of arytenoid muscles
Lateral crico-arytenoid muscles
Posterior Crico-arytenoid muscles
