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NERVOUS SYSTEM

A BODY SYSTEMS PROJECT. NERVOUS SYSTEM. KONTAXAKIS ANTONIOS (27336) TRIANTAFILLOU EVANGELIA FEDRA (27363). INTRODUCTION. Coordination of our body system is achieved through our nervous system, a long leap forward in a millions of years evolution battle. Cellular level.

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NERVOUS SYSTEM

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  1. A BODY SYSTEMS PROJECT NERVOUS SYSTEM KONTAXAKIS ANTONIOS (27336) TRIANTAFILLOU EVANGELIA FEDRA (27363)

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

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

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

  5. SENSORY ORGANS Our sensory organs are: • the ear • the eye • the nose(nasal passages) • the tongue • skin&hairs&nails

  6. 1. Ear:an organ for hearing and balance 2. Eye: an organ of sight.

  7. 3.The tongue:a strong muscle at the floor of the mouth that is covered by the lingual membrane. It is the organ of taste. 4.Skin:It 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.

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

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

  10. Reflex

  11. 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

  12. The Brain

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

  14. Diseases of nervous system • Epilepsy:a disorder inwhich 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.

  15. What can we do to maintain a healthy nervous system? • Well balanced diet • Regular exercise • Stress management • Pharmacist’s Supplement Recommendation • Vitamins and Minerals • Antioxidants • Essential Fatty Acids • Amino Acids • Herbs and Phytonutrients

  16. rapid and effective info processing culture language science ethics adaptability conciousness Pain inability to renew drug addiction certain spectrum of sound+radiation frequency Strengths and weaknesses - +

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