7th Edition Medical Terminology for Health Professions Ann Ehrlich/Carol L.Schroeder © 2013 Delmar, Cengage Learning. All Rights Reserved Special Senses:

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Presentation transcript:

7th Edition Medical Terminology for Health Professions Ann Ehrlich/Carol L.Schroeder © 2013 Delmar, Cengage Learning. All Rights Reserved Special Senses: The Eyes and Ears Chapter 11

© 2013 Delmar, Cengage Learning. All Rights Reserved Overview of Structures, Combining Forms, and Functions of the Eyes and Ears

© 2013 Delmar, Cengage Learning. All Rights Reserved Eyes (and Vison) Primary Function –Receptor organs for the sense of sight Related Word Parts (Combining Forms) –opt/i, opt/o, optic/o –ophthalm/o

© 2013 Delmar, Cengage Learning. All Rights Reserved Structures of the Eyes Adnexa: structures outside the eyeball –Orbit, eye muscles, eyelids, eyelashes, conjunctiva, lacrimal apparatus Eyeball: also known as the globe (continues)

© 2013 Delmar, Cengage Learning. All Rights Reserved Structures of the Eyes (continues)

© 2013 Delmar, Cengage Learning. All Rights Reserved Structures of the Eyes (continues)

© 2013 Delmar, Cengage Learning. All Rights Reserved Structures of the Eyes (continues)

© 2013 Delmar, Cengage Learning. All Rights Reserved Structures of the Eyes

© 2013 Delmar, Cengage Learning. All Rights Reserved Lacrimal Apparatus Primary Function –Produces, stores, and removes tears Related Word Parts (Combining Forms) –dacryocyst/o –lacrim/o

© 2013 Delmar, Cengage Learning. All Rights Reserved Iris Primary Function –Controls the amount of light entering the eye Related Word Parts (Combining Forms) –ir/i, ir/o –irid/o –irit/o

© 2013 Delmar, Cengage Learning. All Rights Reserved Lens Primary Function –Focuses rays of light on the retina Related Word Parts (Combining Forms) –phac/o –phak/o

© 2013 Delmar, Cengage Learning. All Rights Reserved Retina Primary Functions –Converts light images into electrical impulses and transmits them to the brain Related Word Parts (Combining Forms) –retin/o

© 2013 Delmar, Cengage Learning. All Rights Reserved Ears (Hearing and Sound) Primary Function –Receptor organs for the sense of hearing –Help to maintain balance Related Word Parts (Combining Forms) –acous/o, acoust/o –audi/o, audit/o –ot/o

© 2013 Delmar, Cengage Learning. All Rights Reserved Structures of the Ears

© 2013 Delmar, Cengage Learning. All Rights Reserved Primary Function –Transmits sound waves to the middle ear Related Word Parts (Combining Forms) –pinn/i Outer Ear

© 2013 Delmar, Cengage Learning. All Rights Reserved Primary Function –Transmits sound waves to the inner ear Related Word Parts (Combining Forms) –myring/o –tympan/o Middle Ear

© 2013 Delmar, Cengage Learning. All Rights Reserved Inner Ear Primary Function –Receives sound vibrations and transmits them to the brain Related Word Parts (Combining Forms) –labyrinth/o

© 2013 Delmar, Cengage Learning. All Rights Reserved Key Word Parts and Definitions blephar/o –eyelid -cusis –hearing irid/o –iris, colored part of eye kerat/o –horny, hard, cornea (continues)

© 2013 Delmar, Cengage Learning. All Rights Reserved Key Word Parts and Definitions myring/o –tympanic membrane, eardrum ophthalm/o –eye, vision -opia –vision condition opt/o –eye, vision (continues)

© 2013 Delmar, Cengage Learning. All Rights Reserved Key Word Parts and Definitions ot/o –ear, hearing phak/o –lens of eye presby/o –old age retin/o –retina, net (continues)

© 2013 Delmar, Cengage Learning. All Rights Reserved Key Word Parts and Definitions scler/o –sclera, white of eye, hard trop/o –turn, change tympan/o –tympanic membrane, eardrum

© 2013 Delmar, Cengage Learning. All Rights Reserved Questions

© 2013 Delmar, Cengage Learning. All Rights Reserved Question The smallest bone in the body is the stapes, or stirrup bone, of the middle ear. True or False?

© 2013 Delmar, Cengage Learning. All Rights Reserved Answer True

© 2013 Delmar, Cengage Learning. All Rights Reserved Question A ringing, buzzing, or roaring sound in one or both ears is called: a.tinnitus b.labyrinthitis c.tintinitus

© 2013 Delmar, Cengage Learning. All Rights Reserved Answer a. tinnitus

© 2013 Delmar, Cengage Learning. All Rights Reserved Question Men are how many times more likely to be color-blind than women? a.2 b.10 c.5

© 2013 Delmar, Cengage Learning. All Rights Reserved Answer b. Men are 10 times more likely to be color-blind.

© 2013 Delmar, Cengage Learning. All Rights Reserved Question If not treated promptly, open-angle glaucoma can cause blindness in as little as 2 days. True or False?

© 2013 Delmar, Cengage Learning. All Rights Reserved Answer False: Closed-angle, or acute, glaucoma can cause sudden blindness if not treated immediately.