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Summary PHYSIOLOGY : Sensory Physiology Introduction
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Sensory Physiology Introduction • The survival of any organism depends on having adequate information about the external environment, where food is to be found and where hazards abound. • Also important for maintaining the function of a complex organism is information about the st...

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  • October 28, 2024
  • 63
  • 2024/2025
  • Summary

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Sensory Physiology

, Introduction
• The survival of any organism depends on
having adequate information about the
external environment, where food is to be
found and where hazards abound.
• Also important for maintaining the function of
a complex organism is information about the
state of numerous internal bodily processes
and functions.

, Introduction
• Events in the external and internal
environment must first be translated into
signals that the nervous systems can process
• Sensation process involves sampling selected
small amounts of energy from the
environment and using it to control the
generation of action potentials or nerve
impulses

, Sensory Receptors
• Are biological structures that can be as simple as a free
nerve ending or as complicated as an eye or the ear.
• They respond to a particular modality of environmental
stimuli.
• usual stimulus for the eye is light & that for the ear is
sound
• They transduce (change) different forms of sensation
to nerve impulses that are conducted to CNS.
• factor in the environment that produces an effective
response in a sensory receptor is called a stimulus

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