Anatomy: The Larynx Flashcards
Between what vertebral levels is the larynx
C4 and C6
What level of the vertebrae is the hyoid bone
C3
what vertebral level is the cricoid cartilage
c6
what vertebral level is the upper border of the thyroid cartilage
c4/5
at what level does the larynx become the trachea and the pharynx become the oesophagus
C6
what are all the parts of the skeleton of the laryx
the epiglottis (elastic cartilage) the thyoid, cricoid, arytenoid, corniculate and cuneiform cartilages (hyaline)
what is the access point for a cricrothyroid puncture
cricothyroid membrane
what forms the anterior wall of thetrachea
c shaped hyaline cartilage
what forms the posterior wall of the trachea
trachealis (smooth muscle)
what is the name of the adams apple
laryngeal prominence
what type of joint is the cricrothyroid joint
synovial
where do the vocal cords attach
between the thyroid cartilage and the vocal processes of the arytenoid cartilage
what is the name of the space between the tongue and the epiglottis
the valecula
what type of epithelium lines the larynx
respiratory except the vocal cord
what epithelium lines the vocal cords
stratified squamous epithelium
what are the vocal folds
mucosa covering the vocal cords
what supplies sensory nerve supply to the vocal fold and the inferior part of the larynx
recurrent laryngeal branches of the vagus nerve
what gives somatic motor supply to the vocal cords
vagus nerve
what muscles tense the vocal cords
the cricrothyroids
what muscle relaxes the vocal cords
the thyroarytenoids
What is the superior part of the thyroaytenoid
the vocalis
what adducts the vocal cords
the lateral crico arytenoids
what effect does lateral crircroarytenoid contraction have
‘whispering position
how is phonation achieve
the aryteynoids adduct the arytenoid cartilages assisting lateral cricro arytenoids in gently closing the rima glottidis
what are the two types or arytenoid musces
oblique
transverse
when will tight closure of the airway sphincter occure
contraction of lateral cricro arytenoids, arytenoids and cricrothyroid
what abducts the vocal cords
the posterior cricro arytenoids
What gives sensory nerve supply superior to the vocal fold.
superior laryngeal branches of the vagus
what gives sensory nerves supply inferior to the vocal cord
the recurrent laryngeal branches of the vagus
