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Chapter 10. SPECIAL SENSES. SENSORY RECEPTORS. Sensory receptors are structures which are stimulated by changes in the environment They are found all over the body in the skin, connective tissue, and muscle. THE EYE. THE EYE. Sclera - outer layer or white of eye

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sensory receptors
SENSORY RECEPTORS
  • Sensory receptors are structures which are stimulated by changes in the environment
  • They are found all over the body in the skin, connective tissue, and muscle

© 2004 Delmar Learning, a Division of Thomson Learning, Inc.

the eye
THE EYE

© 2004 Delmar Learning, a Division of Thomson Learning, Inc.

the eye1
THE EYE
  • Sclera - outer layer or white of eye
  • Cornea - center and front of sclera
  • Choroid coat - middle of the eye
  • Iris - colored, muscular part
  • Pupil - circular opening in iris
  • Lens - behind iris and pupil
  • Retina - innermost (third) coat

© 2004 Delmar Learning, a Division of Thomson Learning, Inc.

the eye2
THE EYE

© 2004 Delmar Learning, a Division of Thomson Learning, Inc.

pathway of vision
PATHWAY OF VISION

© 2004 Delmar Learning, a Division of Thomson Learning, Inc.

eye disorders
Conjunctivitis

Glaucoma

Cataracts

Macular degeneration

Detached retina

Eye injuries

Vision defects

Presbyopia

Hyperopia

Myopia

Amblyopia

Astigmatism

Diplopia

Strabismus

EYE DISORDERS

© 2004 Delmar Learning, a Division of Thomson Learning, Inc.

the ear
THE EAR

© 2004 Delmar Learning, a Division of Thomson Learning, Inc.

the ear1
THE EAR
  • The outer ear
    • collects sound waves and directs them into auditory canal
  • The middle ear
    • equalizes air pressure
  • The inner ear
    • fluid-filled duct vibrates with sound waves

© 2004 Delmar Learning, a Division of Thomson Learning, Inc.

ear disorders
Otitis media

Otosclerosis

Tinnitus

Presbycusis

Meniere’s disease

Hearing loss

Conductive hearing loss

Sensorineural damage

EAR DISORDERS

© 2004 Delmar Learning, a Division of Thomson Learning, Inc.

the nose
THE NOSE
  • The human nose can detect about 10,000 different smells

© 2004 Delmar Learning, a Division of Thomson Learning, Inc.

disorders of the nose
DISORDERS OF THE NOSE
  • Rhinitis
  • Nasal polyps
  • Deviated nasal septum

© 2004 Delmar Learning, a Division of Thomson Learning, Inc.

the tongue
THE TONGUE
  • The tongue is a mass of muscle tissue with structures called papillae
  • Taste buds cover the papilla, which are stimulated by sweet, sour, salty, and bitter tastes

© 2004 Delmar Learning, a Division of Thomson Learning, Inc.