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Sensory Mechanism

Sensory Mechanism. Marie Černá. Five categories. Mechanoreceptors - muscle spindle - hair cell in ear Pain receptors (nociceptors) Thermoreceptors Chemoreceptors - gustatory (taste) - olfactory (smell) Electromagnetic receptors - photoreceptors.

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Sensory Mechanism

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  1. Sensory Mechanism Marie Černá

  2. Five categories • Mechanoreceptors - muscle spindle - hair cell in ear • Pain receptors (nociceptors) • Thermoreceptors • Chemoreceptors - gustatory (taste) - olfactory (smell) • Electromagnetic receptors - photoreceptors

  3. Structure of the eye

  4. Retina Photoreceptors Neurons

  5. Cells of Retina

  6. The effect of light on retinal

  7. Focusing in the eye

  8. Structure of the ear

  9. Structure of the ear

  10. A cross-sectional view of the cochlea with three canals

  11. Mechanoreceptors

  12. Mechanism of hearing Semicircular canals Vibrations, caused by sound waves, in the tympanic membrane are conducted via 3 small bones to the oval window and create pressure waves in the cochlear fluid - perilymph. The waves pass through the vestibular canal to the apex of the cochlea, then back toward the base of the cochlea via the tympanic canal and end on the round window. Cochlea

  13. As the basilar membrane vibrates, hair cells repeatedly brush against the tectorial membrane. This stimulus causes hair cells to depolarize. Perilymph

  14. Organs of balance

  15. A vestibule contains two chambers:the utricle and saccule

  16. Gustatory chemoreceptors

  17. Olfactory chemoreceptors

  18. Nociceptors + Thermoreceptors

  19. Literature Biology, eighth edition, Campbell, Reece Unit seven: Animal Form and Function Chapter 50: Sensory and Motor Mechanisms Concept 50.1, 50.2, 50.3, 50.4 Pages 1087 – 1105

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