Sensory adaptations and response to stimuli
Download
1 / 14

Sensory Adaptations and Response to stimuli - PowerPoint PPT Presentation


  • 77 Views
  • Uploaded on
  • Presentation posted in: General

Sensory Adaptations and Response to stimuli. Varieties of Stimuli and their Receptors. Sense Organs. Sense organs carry messages about the environment to the central nervous system. Sense Organs. The eyes, ears, nose, tongue, and skin are examples of sense organs.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha

Download Presentation

Sensory Adaptations and Response to stimuli

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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Sensory Adaptations and Response to stimuli


Varieties of Stimuli and their Receptors


Sense Organs

Sense organs carry messages about the environment to the central nervous system.


Sense Organs

The eyes, ears, nose, tongue, and skin are examples of sense organs.

The sense organs gather information (light, sound, heat, and pressure) from the environment.


Environment

The environment is everything outside the body.

The sense organs gather information from outside the body, then send the messages to the brain.


Vision is your ability to see.

Vision

Vision involves the eye and the brain.


Photoreception

Photoreceptors detect “photo” stimuli and are located on the retina. Two light sensitive cells:

  • Rods

    • light intensity and motion sensitive

  • Cones

    • color sensitive

    • Many are present on the fovea centralis

      The blind spot for the eye is cause by the optic nerve.


Myopia (Near-Sightedness)

People with near-sightedness cannot see clearly at distance. Correction via concave lenses.


Hyperopia (Farsightedness)

People with far-sightedness cannot see clearly up close. Correction with convex lenses.


Astigmatism – an uneven curvature of the eyeball


ad
  • Login