NERVOUS SYSTEM

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NERVOUS SYSTEM
A BODY SYSTEMS PROJECT

• KONTAXAKIS ANTONIOS (27336)
• TRIANTAFILLOU EVANGELIA FEDRA
• (27363)

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INTRODUCTION

• Coordination of our body system is achieved
  through our nervous system, a long leap forward
  in a millions of years evolution battle.

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Cellular level

• The nervous system is based on the
  interconnection of neurons, each sending and
  receiving nerve impulses.

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Receptors

• Stimuli are received through special mechanisms,
  receptor organs such as chemo-or thermoreceptor.
  (Meissners tactile or end buld of Krause)

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SENSORY ORGANS

• Our sensory organs are
• the ear
• the eye
• the nose(nasal passages)
• the tongue
• skinhairsnails

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1. Ear an organ for hearing and balance
2. Eye an organ of sight.
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3.The tonguea strong muscle at the floor of the
mouth that is covered by the lingual membrane. It
is the organ of taste.
4.SkinIt consists of 3 layers a)the epidermis
b) the dermis c) the subcutis. The nails are a
form of skin and it is formed by keratin.
5.The nose(nasal passages) an organ of smell.
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Pathway till command centres

• Peripheral nervous system is then assigned to
  carry info till our brain or spinal cord.

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Command Centres

• Brain interneurons and spinal cord reflex arcs
  are assigned to decode stimuli value and decide
  action.

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Reflex
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Brain parts

• Our brain comprises of
• the cerebrum responsible for most of brain
  information processing
• the brain stem dealing with involuntary functions
  of vital importance
• the cerebellum offering balance and equilibrium
  as well as memory of repetitive acts

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The Brain
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Action

• Motor neurons carry the final command till the
  neuroglandular or neuromuscular junction where
  action takes place.

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Diseases of nervous system

• Epilepsy a disorder in which nerve cells of the
  brain, from time to time, release abnormal
  electrical impulses.
• Brain tumors
• Lyme disease a bacterial illness that is
  transmitted to humans by the bite of deer tick.

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What can we do to maintain a healthy nervous
system?

• Well balanced diet
• Regular exercise
• Stress management
• Pharmacists Supplement Recommendation
• Vitamins and Minerals
• Antioxidants
• Essential Fatty Acids
• Amino Acids
• Herbs and Phytonutrients

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Strengths and weaknesses
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• rapid and effective info processing
• culture
• language
• science
• ethics
• adaptability
• conciousness

• Pain
• inability to renew
• drug addiction
• certain spectrum of soundradiation frequency