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Unformatted text preview: 1 Gross Anatomy II Exam II Study Guide LARYNX: connects the lower part of the pharynx to the trachea functions: prevents passage of food into airway during swallowing regulates flow of air to lungs functions in vocalization -- produces raw sound cartilages: Thyroid Cartilage: single cartilage with five features: laryngeal prominence -- anterior median elevation (Adam's Apple) superior horn -- attached to the greater horn of the hyoid bone inferior horn -- articulates with the cricoid cartilage (crico-thyroid joint) laminae -- lateral walls oblique line -- on the external surface of the lamina attachment for inferior constrictor, sternothyroid, and thyrohyoid muscles Cricoid Cartilage: single cartilage ring shaped most inferior of the laryngeal cartilages trachea is just inferior to it at CV 6 Epiglottic Cartilage: single cartilage spoon-shaped behind the root of the tongue and body of the hyoid bone lower end is attached to the back of the thyroid cartilage thyroepiglottic ligament attaches it to the back of the anterior surface of the thyroid Arytenoid Cartilages: paired cartilages pyramidal in shape bases articulate with the cricoid cartilage vocal process -- attachment to the vocal ligament (posterior attachment of the cords) muscular process -- attachment to the intrinsic muscles of the larynx Corniculate Cartilages: paired cartilages on the apices of the arytenoid cartilages closed within the aryepiglottic folds Cuneiform Cartilages: paired cartilages in the aryepiglottic folds anterior to the corniculate cartilages joints: Cricothyroid joint: synovial joint between the side of the cricoid cartilage and the inferior horn of the thyroid cartilage permits rotation of the thyroid cartilage around a horizontal axis ginglymal (hinge) joint Cricoarytenoid joint: synovial joint between the upper boarder of the cricoid cartilage and the base of the arytenoid cartilage permits gliding and rotation (pivoting) of the arytenoid cartilage on the cricoid cartilage ligaments: Thyrohyoid membrane: from the thyroid cartilage to the hyoid bone pierced on each side by the internal laryngeal nerve and superior laryngeal vessels Cricothyroid ligament: from the arch of the cricoid cartilage to the thyroid cartilage Vocal ligament: from the thyroid cartilage in front to the vocal process of the arytenoid cartilage behind true vocal -- vibratory component of sound Conus Elasticus: 2 fibroelastic membrane extends upward from the cricoid cartilage to the vocal ligament...
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This note was uploaded on 04/07/2008 for the course GROSS II 202 taught by Professor T during the Spring '08 term at Palmer Chiropractic.
- Spring '08