1. Special Senses: The Eyes and Ears
Chapter 11

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

3. 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

4. Structures of the Eyes Adnexa: structures outside the eyeball
Orbit, eye muscles, eyelids, eyelashes, conjunctiva, lacrimal apparatus
Eyeball: also known as the globe
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5. Structures of the Eyes
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6. Structures of the Eyes
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7. Structures of the Eyes
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8. Structures of the Eyes

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

10. 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

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

12. 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

13. 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

14. Structures of the Ears

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

16. 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

17. 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

18. Key Word Parts and Definitions
blephar/o
eyelid
-cusis
hearing
irid/o
iris, colored part of eye
kerat/o
horny, hard, cornea
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19. Key Word Parts and Definitions
myring/o
tympanic membrane, eardrum
ophthalm/o
eye, vision
-opia
vision condition
opt/o
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20. Key Word Parts and Definitions
ot/o
ear, hearing
phak/o
lens of eye
presby/o
old age
retin/o
retina, net
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21. Key Word Parts and Definitions
scler/o
sclera, white of eye, hard
trop/o
turn, change
tympan/o
tympanic membrane, eardrum

22. Questions

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

24. Answer
True

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

26. Answer
a. tinnitus

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

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

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

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

31. Answers to Learning Exercises

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

33. Chapter 11 Answers Matching Word Parts 3 11.11. ot/o 11.12. tympan/o
scler/o
retin/o
trop/o
Definitions
sclera
cochlea
optic disk
tympanic membrane
oval window
incus
presbyopia
retinopexy
entropion
otitis media

34. Chapter 11 Answers Matching Conditions 11.26. esotropia
diplopia
hyperopia
myopia
exotropia
Which Word?
diopter
otorrhagia
myringotomy
glaucoma
uveitis

35. Chapter 11 Answers Spelling Counts 11.36. eustachian 11.37. cerumen
astigmatism
labyrinthitis
Snellen
Abbreviation Identification
conjunctivitis
intraocular lens
right eye
intraocular pressure
macular degeneration

36. Chapter 11 Answers Term Selection 11.46. myopia 11.47. anisocoria
mastoidectomy
hordeolum
otomycosis
Sentence Completion
refraction
vertigo
optometrist
keratitis
monochromatism

37. Chapter 11 Answers Word Surgery 11.56. anis/o, cor, -ia
emmetr, -opia
ot/o, py/o, -rrhea
presby, -cusis
xer, ophthalm, -ia
True/False
False
True
False
True
True

38. Chapter 11 Answers Clinical Conditions 11.66. otoplasty
barotrauma
iridectomy
hemianopia
fluorescein
periorbital
nyctalopia
tinnitus
chalazion
conjunctivitis
Which Is the Correct Medical Term?
papilledema
photopsia
ametropia
canthus
impacted cerumen

39. Chapter 11 Answers Challenge Word Building 11.81. iridalgia
blepharitis
lacrimitis
blepharopathy
ophthalmology
blepharedema
lacrimotomy
labyrinthotomy
iridopathy
retinectomy
Labeling Exercises
cornea
chamber
lens
iris
fovea
pinna
auditory
tympanic
eustachian
cochlea