Nervous system K R N

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Nerves System

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The nervous system Neurones C N S P N S Brain Spinal cord

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C N S( Central nervous system) The central nervous system (C N S), consisting of the brain and the spinal cord

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Sensory or Afferent Neurone .. Sight Hearing Smell Taste Motor or Efferent Neurone .. Effector organs Somatic autonomic Functional component of the nervous system.

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Neurons Neurones have the characteristics of irritability and conductivity; Conductivity means the ability to transmit an impuls …

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Neurones have the ability to transmit an impulse by the help of some parts of neurones by the bonding between dendrites and terminals...

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Than many neurones bounded to each other by the help of dendrites and terminals.. Synapse

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What is Brain….?

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? ... What is brain…?

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Lobe:- Frontal lobe Parietal lobe Occipital lobe Temporal lobe Brain

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Brain & Brain stem

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Function of cerebrum…

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Human Brain is located in the human skull…

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Covering of the brain…

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Now next part of C N S is spinal cord. This 3 rd part is known as spinal cord.

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Spinal cord It is approximately 45 cm long in adult human..

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Spinal cord

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Spinal cord parts…

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Cervical Nerves 1-8 Vertebrae 1-7 Thoracic Nerves 1-12 Vertebrae 1-12 Lumbar Nerves 1-5 Vertebrae 1-5 Sacral Nerves 1-5 Vertebrae 1-5 C1 C2 C3 C4 C5 C6 C7 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 L1 L2 L3 L4 L5 S1 S2 S3 S4 S5

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Spinal nerves location in human body…

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Cervical nerves Thoracic nerves Lumbar nerves Sacral nerves

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Covering of spinal cord… Sensory nerve & Motor nerve

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Reflex arc

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This is a best ex. Of reflex arc… Sensory nerve provide by the C7- C8 spinal nerves to heat

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Now that’s your time ask me Question…

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? ...

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Thnxxx …

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