1 / 30

SPECIAL SENSES

animals.nationalgeographic.com. http://www.flickr.com/photos/klimari1/3739710668/. http://desktopwallpaper-s.com/12-3D-Art/-/Sound/. carlsafina.org. randommealoftheday.blogspot.com. SPECIAL SENSES. Chapter 17. 5 Special Senses. Olfaction Gustation Vision Equilibrium Hearing.

dorit
Télécharger la présentation

SPECIAL SENSES

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. animals.nationalgeographic.com http://www.flickr.com/photos/klimari1/3739710668/ http://desktopwallpaper-s.com/12-3D-Art/-/Sound/ carlsafina.org randommealoftheday.blogspot.com SPECIAL SENSES • Chapter 17

  2. 5 Special Senses • Olfaction • Gustation • Vision • Equilibrium • Hearing

  3. CHEMICAL SENSES • Olfaction & Gustation

  4. OLFACTION • Nasal concha • Olfactory epithelium • Olfactory receptor cells • Olfactory Pathways

  5. OLFACTORY RECEPTORs

  6. GUSTATION • Lingual papillae • filiform, fungiform, circumvallate • Taste Receptors • Basal cells • Gustatory cells • Taste pore

  7. GUSTATORY RECEPTORS

  8. GUSTATORY DISCRIMINATION • Sweet • Salty • Sour • Bitter • Umami • Water • Calcium

  9. Vision

  10. Vision • Lacrimal gland produces tears: • Water & lysozyme • Tears combine with oil from tarsal gland

  11. Vision • Three Tunics (Layers) • Fibrous • Vascular • Sensory

  12. VISION • Lens • fibrous capsule • suspensory ligaments • crystallin protein • Accommodation http://rstb.royalsocietypublishing.org/content/366/1568/1250.abstract

  13. VISUAL PHYSIOLOGY • Photoreceptors detect photons within visible light spectrum • Rods are used in dim light • peripheral and night vision • Cones are use in bright light • Sharp and color vision

  14. RODS & CONES • Discs • Rhodopsin=Opsin+Retinal • Dark adaptation • Light adaptation

  15. COLOR BLINDNESS • Non-functional cones • Protanope • Deuteranope • Tritanope • http://colorvisiontesting.com/what%20colorblind%20people%20see.htm

  16. PHOTORECEPTION

  17. PHOTORECEPTION

  18. RETINAL PROCESSING • Ganglion cells are diverse • M cells • On-center neurons • Off-center neurons • P cells • Horizontal cells • Amacrine cells

  19. VISUAL PATHWAYS

  20. HEARING & EQUILIBRIUM

  21. EAR ANATOMY

  22. INNER EAR • Three chambers • Scala tympani • Scala vestibuli • Scala media (cochlear duct) • Spiral organ of corti

  23. SOUND • Measured in wavelengths • Frequency or cycles • Hertz=cycles per second • Pitch • Amplitude • Decibels=sound energy

  24. HEARING PROCESS

  25. AUDITORY PATHWAYS

  26. EQUILIBRIUM • Static equilibrium • Saccule & utricle • Dynamic equilibrium • Semicircular ducts (canals)

  27. SEMICIRCULAR DUCTS

  28. UTRICLE & SACULE

  29. EQUILIBRIUM PATHWAYS

More Related