Skin Receptors

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Skin Receptors
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Body Receptors

• Sensory Receptors- nerves and cells that are in
  your eyes and ears.
• External Receptors outside the body, pain,
  heat, pressure, light, chemicals.
• Internal Receptors blood pressure, balance,
  energy use, heart beat

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Skin Communication to Brain

• Your body has about 20 different types of nerve
  endings that all send messages to your brain.
• The 4 most common at heat, cold, pain, and
  pressure/touch receptors.
• Pain is important for your safety
• Some parts of our body have more nerve endings
  than others

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Skin Receptors

• Tongue, sensitive to pain but not to hot and
  cold, that is how you burn your mouth so easily.
• Fingertips are also very sensitive, some people
  use their fingers to read.
• There are about 100 touch receptors in each
  fingertip.
• The least sensitive part of your body is the
  middle of you back.
• The most sensitive part are your hands, lips,
  face, neck, tongue, fingertips and feet

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Pressure

• Mechanoreceptors sense physical touch and
  pressure, also respond to motion, stretch, and
  sound.

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Pain

• Pain Receptors- respond to pain and light touch,
  these are negative receptors if you feel the pain
  you remove the stimuli. They can be dulled with
  pain medication like Asprin and ibuprofen

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Hot and Cold

• Thermoreceptors hot and cold temperature, body
  temperature

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Chemical Receptors

• Chemoreceptors taste, smell

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Magnetic Receptors

• Electromagnetic receptors light, electricity,
  magnets, radiation
• Platypus can sense the electric fields of the
  prey in the muscles of their bills
• Migratory patterns of whales.

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Shivering

• It is your bodys way of trying to get warmer.
• Rattlesnakes are use their skin to feel the body
  heat of other animals