Larynx (respiratory tract) Flashcards
which vertebrae is the larynx anterior to
C3-6
what is the bone attached to the larynx
hyoid bone
cartilaginous structures in larynx
thyroid cartilage
cricoid cartilage (inferior to thyroid)
epiglottis
2 arytenoid cartilages
adjoining ligaments in larynx
thyrohyoid ligament
cricothyroid ligament
quadrangular ligament
why is the quadrangular ligament open posteriorly
allows air through
features of thyroid cartilage
superior and inferior horn (posterior)
laryngeal prominence (adams apple)
lamina
what are the horns on the thyroid cartilage for
ligament attachements
which cartilage is shaped like a signet ring
cricoid cartilage
laryngeal muscles
cricothyroid muscle
lateral cricoarytenoid
posterior cricoarytenoid
transverse arytenoid
what elevates during swallowing
mainly larynx not just epiglottis. hyoid elevates and brings everything with it.
innervation of larynx
vagus nerve (CN10)
superior laryngeal nerve
recurrent laryngeal nerve
where does the recurrent laryngeal nerve pass on the right side
under subclavian artery
where does the recurrent laryngeal nerve pass on the left side
under arch of aorta
where do both recurrent laryngeal nerves pass
in a groove between oesophagus and trachea
larynx functions
produce sound (vocal cords)
protection of lower respiratory tract when swallowing
passageway
humidify, warm and filter air
