LippincottWilli_2013_8EarsNoseAndThroat_AssessmentMadeIncredi.pdf

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220Ears, nose, and throatJust the factsIn this chapter, you’ll learn:structures of the ears, nose, and throat and their functionsquestions to ask about the ears, nose, and throat during the health historytechniques for assessing the ears, nose, and throatear, nose, and throat abnormalities and their causes.A look at the ears, nose, and throatThe ability to hear, smell, and taste allows us to communicate with others, connect withthe world around us, and take pleasure in life. Because these senses play such vital rolesin daily life, you’ll need to thoroughly assess a patient’s ears, nose, and throat.Copyright @ 2013. LWW.All rights reserved. May not be reproduced in any form without permission from the publisher, except fair uses permitted under U.S. or applicable copyright law.EBSCO : eBook Collection (EBSCOhost) - printed on 1/3/2019 8:00 AM via JERSEY COLLEGEAN: 1473030 ; Lippincott Williams & Wilkins.; Assessment Made Incredibly Easy!Account: ns228275.main.ehost
221Clues for youBesides revealing impairments in hearing, smell, and taste, your assessment also canuncover important clues to physical problems in the patient’s integumentary,musculoskeletal, cardiovascular, respiratory, immune, and neurologic systems.Anatomy and physiologyTo perform an accurate physical assessment, you’ll need to understand the anatomy andphysiology of the ears, nose, and throat.EarsThe ear is divided into three parts: external, middle, and inner. The anatomy andphysiology of each part play separate but equally important roles in hearing. (SeeA close.)look at the earExternal earThe flexible external ear consists mainly of elastic cartilage. This part of the ear containsthe ear flap, also known as theor, and the auditory canal. The outer third ofauriclepinnathis canal has a bony framework. Coarse hair may be visible in the canal in elderly men.The external ear and ear canal collect sounds and transmit them to the middle ear.A close look at the earCopyright @ 2013. LWW.All rights reserved. May not be reproduced in any form without permission from the publisher, except fair uses permitted under U.S. or applicable copyright law.EBSCO : eBook Collection (EBSCOhost) - printed on 1/3/2019 8:00 AM via JERSEY COLLEGEAN: 1473030 ; Lippincott Williams & Wilkins.; Assessment Made Incredibly Easy!Account: ns228275.main.ehost
222Use this illustration to review the structures of the ear.Middle earThe tympanic membrane separates the external and middle ear. This pearl gray structureconsists of three layers: skin, fibrous tissue, and a mucous membrane. Its upper portion,the pars flaccida, has little support; its lower portion, the pars tensa, is held taut.The center, or umbo, is attached to the tip of the long process of the malleus on the otherside of the tympanic membrane.A small, air-filled structure, the middle ear performs two vital functions:It transmits sound vibrations across the bony ossicle chain to the inner ear.

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Term
Summer
Professor
Ms. Merine
Tags
Nursing, Lippincott Williams Wilkins

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