Senses

1
Senses

• General - located throughout body
• Special localized to specific organs

2
Sensory / Afferent Receptors

• Chemoreceptors detect chemicals dissolved in
  solution
• Mechanoreceptors respond to change in pressure
  of movement of fluids/tissue
• Nocioceptors respond to tissue damage
• Thermoreceptors respond to changes in
  temperature
• Photoreceptors respond to light energy

3
General Senses somatic senses

• Associated with skin, muscles, joints and
  visceral organs
• Touch -- Pressure mechanoreceptors
• Proprioception mechanoreceptors
• Temperature mechanoreceptors
• Pain mechanoreceptors

4
Special Senses

• Taste Gustatory chemoreceptor
• CN VII facial IX glossopharyngeal
• Smell Olfaction chemoreceptor
• CN I olfactory
• Hearing/ Equilibrium mechanoreceptor
• CN VIII acoustic / vestibulocochlear
• Sight photoreceptor
• CN II optic

5
Sense of Smell
6
Sense of Taste
7
Sense of Hearing
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9
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10
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11
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12
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13
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14
Cranial Nerves
CN I Olfactory sensory CN II Optic - sensory
CN III Oculomotor - motor CN IV Trochlear
motor CN VI Abducens - motor
15
CN III Oculomotor CN IV - Trochlear
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CN VI - Abducens
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CN IV - Trochlear
18
Cranial Nerves
CN V Trigeminal sensory motor
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CN V Trigeminal sensory motor
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21
Cranial Nerves
CN VII - Facial sensory motor
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Cranial Nerves
CN VIII Vestibulocochlear - sensory
CN IX Glossopharyngeal sensory motor
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Cranial Nerves
CN X Vagus sensory motor
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Cranial Nerves
CN XI Accessory - motor
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Cranial Nerves
CN XII Hypoglossal - motor
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