Larynx & Ear

<p>Thyroid cartilage</p> Signup and view all the answers

<p>Nine cartilages</p> Signup and view all the answers

<p><strong>Role in phonation for voice production and guarding the airway during swallowing</strong></p> Signup and view all the answers

<p>Epiglottis</p> Signup and view all the answers

<p>Thyroarytenoid ligament</p> Signup and view all the answers

<p>Tenses the vocal cords</p> Signup and view all the answers

<p>Internal laryngeal nerve</p> Signup and view all the answers

<p>Assist in closure of the laryngeal inlet</p> Signup and view all the answers

<p>Below the rima glottidis</p> Signup and view all the answers

<p>Stabilizing the larynx during swallowing</p> Signup and view all the answers

<p>Aryepiglottic ligament</p> Signup and view all the answers

<p>Connecting to the hyoid bone</p> Signup and view all the answers

<p>Cricoid to thyroid anteriorly</p> Signup and view all the answers

<p>Conus elasticus</p> Signup and view all the answers

<p>Supporting the vocal cords</p> Signup and view all the answers

<p>Form the boundary between the external and internal portions of the ear</p> Signup and view all the answers

<p>Stapedius and Tensor tympani</p> Signup and view all the answers

<p>Vestibulocochlear nerve (CN VIII)</p> Signup and view all the answers

<p>Semicircular canals</p> Signup and view all the answers

<p>Collect sound waves</p> Signup and view all the answers

<p>Malleus, Incus, Stapes</p> Signup and view all the answers

<p>Cricothyroid muscle</p> Signup and view all the answers

<p>Hoarseness</p> Signup and view all the answers

<p>External laryngeal nerve</p> Signup and view all the answers

<p>Tiring easily when speaking</p> Signup and view all the answers

<p>Severely impairs breathing</p> Signup and view all the answers

<p>Collects sound waves and conducts them to the tympanic membrane</p> Signup and view all the answers

<p>Rima Glottidis = Space between right and left vocal folds Vestibule = Part of the larynx between the superior aperture and the vestibular folds Ventricles = Lateral expansions of the laryngeal cavity between the vestibular folds and vocal folds Glottis = Vocal apparatus of the larynx; consists of the vocal folds and the opening between them</p> Signup and view all the answers

<p>Quadrangular Membrane = Extends between the lateral aspects of the arytenoid and epiglottic cartilages Thyrohyoid membrane = Connects thyroid cartilage to the hyoid bone Vestibular folds = Formed by the vestibular ligaments Vocal folds = Formed by the vocal ligaments</p> Signup and view all the answers

<p>Superior laryngeal artery = Pierces thyrohyoid membrane with internal laryngeal nerve Inferior laryngeal artery = Branch of inferior thyroid artery (off thyrocervical trunk)</p> Signup and view all the answers

<p>Posterior cricoarytenoid = Abducts cords Lateral cricoarytenoid/ Transverse arytenoid = Adducts cords Thyroarytenoid (vocalis) = Relaxes cords Cricothyroid = Stretches / tenses cords</p> Signup and view all the answers

<p>Infraglottic Cavity = Inferior-most part of the laryngeal cavity extending from rima glottidis superiorly to trachea inferiorly Laryngeal Outlet = Located at lower border of cricoid cartilage (C6)</p> Signup and view all the answers

<p>Guards the air passageway during swallowing, maintaining a patent airway = Cricoid cartilage Role in phonation for voice production = Thyroid cartilage Gives flexibility to the epiglottis = Epiglottic cartilage Forms a complete ring around the airway = Cricoid cartilage</p> Signup and view all the answers

<p>Explain resulting effects of nerve injuries of the larynx. = Voice production impairment What symptom arises from paralysis of the cricothyroid muscle? = Monotone voice What is the consequence of a unilateral injury to the recurrent laryngeal nerve? = Breathing difficulty How does bilateral lesion of the recurrent laryngeal nerve affect breathing? = Severe breathing impairment</p> Signup and view all the answers

<p>External laryngeal nerve (GSE) = Paralysis results in a monotone voice Recurrent laryngeal nerve (Inferior laryngeal n.) (GSE, GVA) = Unilateral injury results in hoarseness and possible difficulty in clearing one’s throat</p> Signup and view all the answers

<p>External (outer) ear = Collects sound waves and conducts them to the tympanic membrane Ear vestibular portion = Responsible for equilibrium Ear cochlear portion = Responsible for audition or hearing Tympanic membrane = Function is to transmit sound vibrations to the ossicles</p> Signup and view all the answers

<p>Auricle in ear = Collects sound waves and directs them into external auditory canal Adam's Apple (Thyroid cartilage) = Consists of two laminae that fuse and protect vocal cords Ossicles chain in middle ear = Transmits sound vibrations from tympanic membrane to inner ear fluid Cricopharyngeus part of inferior pharyngeal constrictor muscle = Innervated by recurrent laryngeal nerve</p> Signup and view all the answers

<p>Auricle = Collects sound waves Tympanic membrane = Transmits waves to the ossicles of the middle ear Semicircular canals &amp; vestibule = Responsible for balance and position Cochlea = Responsible for auditory sense</p> Signup and view all the answers

<p>Ossicles (malleus, incus, stapes) = Transmit sound wave induced vibrations to the fluid of the inner ear Stapedius muscle = Innervated by CN VII Tensor tympani muscle = Innervated by CN V3 Middle ear = Transmits sound wave induced vibrations of the tympanic membrane to the inner ear</p> Signup and view all the answers

<p>Chorda tympani (CN VII) = Innervates the internal ear structures Tympanic plexus (CN VII, CN IX, sympathetics) = Provides neural supply to the middle and internal ear Vestibulocochlear nerve (CN VIII) = Innervates the Vestibulocochlear Organ Facial nerve (CN VII) = Innervates muscles in the middle ear</p> Signup and view all the answers