larynx Flashcards
general larynx
respiratory and voice producing function connects pharynx to trachea prevents food getting into airways CV3-6 cartilages, membranes, and mm
laryngeal aditus
sup opening from pharynx
vestible
area proximal to vestibular folds
vestibular folds
false
rima vestibuli
opening btwn vestibular folds
ventricle
btwn vestibular and vocal folds
rima glottidis
opening btwn vocal folds
shape varies depending on position of vocal folds
variation in tension and length of folds and width of rima produces changes in pitch
glottis
rima glottidis plus vocal folds
infraglottic cavity
distal to vocal folds
cricoid caritlage
CV6
site where carotid a can be compressed against CV6
jnx of larynx and traches
jnx of pharynx and esophagus
tracheotomy
incision btwn criocid cartilage and first tracheal cartilages
or bwn cricoid and thyroid caritlages thru criciothyroid lig
thyroid cartilage
1 CV4,5 laminae(2) fuse ant and open post sup horn attached to hyoid via lat thyrohyoid lig inf horn articlates w/cricoid cart laryngeal prominence (adams apple) sup thyroid notch oblique line
cricoid cartilage
1
CV6
immobile ring attached via membrane to 1st tracheal cartilage
ant arch
post lamina
articulates w/arytenoid and thyroid cartilages
arytenoid cartilages
2
lie perched atop post portion of cricoid cartilage
apex- attaches to aryepiglottic fold
vocal process- attaches to vocal lig
mm process- attaches to post and lat cricoarytenoid mm
epiglottic cartilage
1
leaf shaped elastic post to root of tongue
broad sup end free, inf attached to thyroid cart
mm of pharynx pull the thyroid cart against epiglottis during swallowing to prevent food from moving into larynx
ligaments attaches to epiglottis
thryoepiglottic
hyoepiglottic
aryepiglottic
glossoepiglottic
corniculate cartilage
2
lie atop apex of arytenoid cat
cuneiform
2
lie w/in aryepiglottic folds
laryngeal extrinsic ligaments
thyroid membrane
cricotracheal lig
hypepiglottic lig
glossoepiglottic lig
thyroid membrane
attaches hyoid bone to sup border of thyroid cartilage
thickened laterally - lat thyrohyoid lig
thickened medially- median thyrohyoid lig
pierced by internal laryngeal n and sup laryngeal a