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Peripheral Nervous System

Peripheral Nervous System. Homework. Study for Jeopardy tomorrow!. Sensory Division. Cranial Nerves Openings in the skull Spinal Nerves Stimulate the rest of the body Sensory division of peripheral nervous system transmits impulses from sense organs to the central nervous system

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Peripheral Nervous System

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  1. Peripheral Nervous System

  2. Homework • Study for Jeopardy tomorrow!

  3. Sensory Division • Cranial Nerves • Openings in the skull • Spinal Nerves • Stimulate the rest of the body • Sensory division of peripheral nervous system transmits impulses from sense organs to the central nervous system • Can be categorized by what type of stimulus they respond to…

  4. Sensory Receptors

  5. Peripheral Nervous System

  6. Cranial Nerves • Stimulate regions of the brain • 12 Cranial Nerves • Olfactory • Optic • Oculomotor • Trochlear • Trigeminal • Abducens • Facial • Auditory • Glossopharyngeal • Vagus • Accessory • Hypoglossal

  7. Cranial Nerves • Olfactory – Smell, identify familiar scents • Optic – Snellen Test, pen light test • Oculomotor – Raise and lower eyelids • Trochlear – “Follow the finger” closer to face • Trigeminal – Sensation on forehead and cheek • Abducens – “Follow finger” in all directions

  8. Cranial Nerve • Facial Nerve – Smile, frown, raise eyebrow, puff cheeks • Vestibulocochlear – Snap/rub fingers in their ears • Glossopharyngeal – Stick out tongue • Vagus – Ability to speak and swallow • Accessory – Turn head left and right and against resistance • Hypoglossal – Stick out tongue and move tongue side to side

  9. Cranial Nerves

  10. Motor Receptors • Motor Division of PNS transmits impulses from CNS to muscles or glands • What is the chain of how a motor neuron responds to a stimulus?

  11. PNS Cycle

  12. Autonomic Nervous System • Regulates involuntary activities • When you run, the ANS speeds up heart rate, increases stimulation of sweat glands and slows down the digestive tract

  13. Homework • Study for Jeopardy tomorrow!

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