Skin Receptors

Skin ReceptorsSkin Receptors

Body ReceptorsBody Receptors

Sensory Receptors- nerves and cellsthat are in your eyes and ears.Sensory Receptors- nerves and cellsthat are in your eyes and ears.

External Receptors – outside the body,pain, heat, pressure, light, chemicals.External Receptors – outside the body,pain, heat, pressure, light, chemicals.

Internal Receptors – blood pressure,balance, energy use, heart beatInternal Receptors – blood pressure,balance, energy use, heart beat

Skin Communication toBrainSkin Communication toBrain

Your body has about 20 different types ofnerve endings that all send messages toyour brain.Your body has about 20 different types ofnerve endings that all send messages toyour brain.

The 4 most common are heat, cold, pain,and pressure/touch receptors.The 4 most common are heat, cold, pain,and pressure/touch receptors.

Pain is important for your safetyPain is important for your safety

Some parts of our body have more nerveendings than othersSome parts of our body have more nerveendings than others

Skin ReceptorsSkin Receptors

Tongue, sensitive to pain but not to hot andcold, that is how you burn your mouth soeasily.Tongue, sensitive to pain but not to hot andcold, that is how you burn your mouth soeasily.

Fingertips are also very sensitive, some peopleuse their fingers to read.Fingertips are also very sensitive, some peopleuse their fingers to read.

There are about 100 touch receptors in eachfingertip.There are about 100 touch receptors in eachfingertip.

The least sensitive part of your body is themiddle of you back.The least sensitive part of your body is themiddle of you back.

The most sensitive part are your hands, lips,face, neck, tongue, fingertips and feetThe most sensitive part are your hands, lips,face, neck, tongue, fingertips and feet

PressurePressure

Mechanoreceptors –sense physical touchand pressure, also respond to motion,stretch, and sound.Mechanoreceptors –sense physical touchand pressure, also respond to motion,stretch, and sound.

PainPain

Pain Receptors- respond to pain and lighttouch, these are negative receptors if youfeel the pain you remove the stimuli. Theycan be dulled with pain medication likeAsprin and ibuprofenPain Receptors- respond to pain and lighttouch, these are negative receptors if youfeel the pain you remove the stimuli. Theycan be dulled with pain medication likeAsprin and ibuprofen

Hot and ColdHot and Cold

Thermoreceptors – hot and coldtemperature, body temperatureThermoreceptors – hot and coldtemperature, body temperature

Chemical ReceptorsChemical Receptors

Chemoreceptors – taste, smellChemoreceptors – taste, smell

Magnetic ReceptorsMagnetic Receptors

Electromagnetic receptors – light,electricity, magnets, radiationElectromagnetic receptors – light,electricity, magnets, radiation

Platypus – can sense the electric fields ofthe prey in the muscles of their billsPlatypus – can sense the electric fields ofthe prey in the muscles of their bills

Migratory patterns of whales.Migratory patterns of whales.

ShiveringShivering

It is your body’s way of trying to getwarmer.It is your body’s way of trying to getwarmer.

Rattlesnakes are use their skin to feel thebody heat of other animalsRattlesnakes are use their skin to feel thebody heat of other animals