Special Senses: The Eyes and Ears Chapter 11

Overview of Structures, Combining Forms, and Functions of the Eyes and Ears

Eyes (and Vison) Primary Function Related Word Parts (Combining Forms) Receptor organs for the sense of sight Related Word Parts (Combining Forms) opt/i, opt/o, optic/o ophthalm/o

Structures of the Eyes Adnexa: structures outside the eyeball Orbit, eye muscles, eyelids, eyelashes, conjunctiva, lacrimal apparatus Eyeball: also known as the globe (continues)

Structures of the Eyes (continues)

Structures of the Eyes (continues)

Structures of the Eyes (continues)

Structures of the Eyes

Lacrimal Apparatus Primary Function Produces, stores, and removes tears Related Word Parts (Combining Forms) dacryocyst/o lacrim/o

Iris Primary Function Related Word Parts (Combining Forms) Controls the amount of light entering the eye Related Word Parts (Combining Forms) ir/i, ir/o irid/o irit/o

Lens Primary Function Related Word Parts (Combining Forms) Focuses rays of light on the retina Related Word Parts (Combining Forms) phac/o phak/o

Retina Primary Functions Related Word Parts (Combining Forms) Converts light images into electrical impulses and transmits them to the brain Related Word Parts (Combining Forms) retin/o

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

Structures of the Ears

Outer Ear Primary Function Related Word Parts (Combining Forms) Transmits sound waves to the middle ear Related Word Parts (Combining Forms) pinn/i

Middle Ear Primary Function Related Word Parts (Combining Forms) Transmits sound waves to the inner ear Related Word Parts (Combining Forms) myring/o tympan/o

Inner Ear Primary Function Related Word Parts (Combining Forms) Receives sound vibrations and transmits them to the brain Related Word Parts (Combining Forms) labyrinth/o

Key Word Parts and Definitions blephar/o eyelid -cusis hearing irid/o iris, colored part of eye kerat/o horny, hard, cornea (continues)

Key Word Parts and Definitions myring/o tympanic membrane, eardrum ophthalm/o eye, vision -opia vision condition opt/o (continues)

Key Word Parts and Definitions ot/o ear, hearing phak/o lens of eye presby/o old age retin/o retina, net (continues)

Key Word Parts and Definitions scler/o sclera, white of eye, hard trop/o turn, change tympan/o tympanic membrane, eardrum

Questions

Question The smallest bone in the body is the stapes, or stirrup bone, of the middle ear. True or False?

Answer True

Question A ringing, buzzing, or roaring sound in one or both ears is called: tinnitus labyrinthitis tintinitus

Answer a. tinnitus

Question Men are how many times more likely to be color-blind than women? 2 10 5

Answer b. Men are 10 times more likely to be color-blind.

Question If not treated promptly, open-angle glaucoma can cause blindness in as little as 2 days. True or False?

Answer False: Closed-angle, or acute, glaucoma can cause sudden blindness if not treated immediately.

Answers to Learning Exercises

Chapter 11 Answers Matching Word Parts 1 11.1. kerat/o 11.2. blephar/o 11.3. opt/o 11.4. -cusis 11.5. -metry Matching Word Parts 2 11.6. myring/o 11.7. ophthalm/o 11.8. irid/o 11.9. presby/o 11.10. -opia

Chapter 11 Answers Matching Word Parts 3 11.11. ot/o 11.12. tympan/o 11.13. scler/o 11.14. retin/o 11.15. trop/o Definitions 11.16. sclera 11.17. cochlea 11.18. optic disk 11.19. tympanic membrane 11.20. oval window 11.21. incus 11.22. presbyopia 11.23. retinopexy 11.24. entropion 11.25. otitis media

Chapter 11 Answers Matching Conditions 11.26. esotropia 11.27. diplopia 11.28. hyperopia 11.29. myopia 11.30. exotropia Which Word? 11.31. diopter 11.32. otorrhagia 11.33. myringotomy 11.34. glaucoma 11.35. uveitis

Chapter 11 Answers Spelling Counts 11.36. eustachian 11.37. cerumen 11.38. astigmatism 11.39. labyrinthitis 11.40. Snellen Abbreviation Identification 11.41. conjunctivitis 11.42. intraocular lens 11.43. right eye 11.44. intraocular pressure 11.45. macular degeneration

Chapter 11 Answers Term Selection 11.46. myopia 11.47. anisocoria 11.48. mastoidectomy 11.49. hordeolum 11.50. otomycosis Sentence Completion 11.51. refraction 11.52. vertigo 11.53. optometrist 11.54. keratitis 11.55. monochromatism

Chapter 11 Answers Word Surgery 11.56. anis/o, cor, -ia 11.57. emmetr, -opia 11.58. ot/o, py/o, -rrhea 11.59. presby, -cusis 11.60. xer, ophthalm, -ia True/False 11.61. False 11.62. True 11.63. False 11.64. True 11.65. True

Chapter 11 Answers Clinical Conditions 11.66. otoplasty 11.67. barotrauma 11.68. iridectomy 11.69. hemianopia 11.70. fluorescein 11.71. periorbital 11.72. nyctalopia 11.73. tinnitus 11.74. chalazion 11.75. conjunctivitis Which Is the Correct Medical Term? 11.76. papilledema 11.77. photopsia 11.78. ametropia 11.79. canthus 11.80. impacted cerumen

Chapter 11 Answers Challenge Word Building 11.81. iridalgia 11.82. blepharitis 11.83. lacrimitis 11.84. blepharopathy 11.85. ophthalmology 11.86. blepharedema 11.87. lacrimotomy 11.88. labyrinthotomy 11.89. iridopathy 11.90. retinectomy Labeling Exercises 11.91. cornea 11.92. chamber 11.93. lens 11.94. iris 11.95. fovea 11.96. pinna 11.97. auditory 11.98. tympanic 11.99. eustachian 11.100. cochlea