Senses & Sensory Relationships – All of our senses respond to stimuli in the environment/ – _____________________________________ ___ – _____________________________________ _____________________________________ ______ – The role of sense receptors is to ______________ ________________ and to provide the other parts of the body with information about these stimuli.
Senses & Sensory Relationships. All of our senses respond to stimuli in the environment/ ________________________________________ ________________________________________________________________________________ - PowerPoint PPT Presentation
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Senses & Sensory Relationships– All of our senses respond to stimuli in the
ughTHE PROPERTY OF REFRACTION (BENDING IF LIGHT), we are able to focus an image at the back of our eye, in the Retina.
The image for which we see from the outside environment is actually upside down on our retina.The Brain flips it back so we can see right-side-up.
• Light rays enter the eye and focus on the retinal nerve cells (neurons)
• These retinal nerve cells then change the light waves that strike them into nerve impulses that are carried along the optic nerve to the visual center of the brain
• Optic nerve– Nerve tissue formed by the axons of the
retinal cells– Transmits nerve impulses form the retina to
the optical centre of the brain
• Examples of retinal nerve cells:– Rods = detect light and dark– Cones = detect colour