Neurons

Neurons

Classification
1. Function
  1. Sensory
  2. Interneurons
  3. Motor
    1. Somatic
    2. Autonomic
      1. Sympathetic
      2. Parasympathetic
2. Structure
  1. Unipolar
  2. Bipolar
  3. Multipolar
Properties
1. Excitability
2. Conductivity
  1. Saltatoy conduction
    1. Myelinated axons
  2. Regular conduction
    1. Unmyelinated axons
3. Secretion
Anatomy
1. Soma
2. Dendrites
3. Axon
  1. Transport
    1. Axonal
      1. Anterograde
      2. Retrograde
    2. Microtubules guides
supported by
1. Glial cells
  1. CNS
    1. Astrocytes
      1. Blood brain barrier
    2. Microglia
    3. Ependymal cells
    4. Oligodendrocytes
  2. PNS
    1. Satellite cells
    2. Scwann cells
Comunicate
1. by signals
  1. Chemical signals
    1. neurotransmitters
      1. Excitatory
        EPSP
      2. Inhibitory
        IPSP
  2. Electrical signals
    1. Action potentials (BUZZ)
      1. properties
        = strentgh
        =speed
        different frequency
      2. 3 phases
        hyperpolarization
        repolarization
        depolarization
      3. changes in resting membrane potential
        -70mV
2. through synapses
  1. Chemical synapses
    1. ligand-gated channels
  2. Electrical synapses
    1. gap junctions
  3. Types
    1. Axodendritic
    2. Axosomatic
    3. Axoaxonix
Tuberlike structure of neurons
1. Spinal cord
  1. Vertebrae protect spinal cord
  2. Central Nervous System (CNS)
    1. The brain
      1. Cerebellum
        controls
        Voluntary movements
        Balance
        Posture
        Store info about the movements you often do
      2. Brain stem
        controls
        Voluntary Movements
        Connects
        Brain with the spinal cord
      3. Cerebrum
        Largest part of the brain
        controls
        Memory
        Language
        process
        Touch
        Sight
    2. Nervous System
      1. Peripheral nervous system (PNS)
        Somatic System
        Voluntary movements
        controls
        Skeletal muscle
        Autonomic System
        Involuntary mvemebts
        controls
        Smooth muscle
        Cardiac Muscle

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	Created by Fatima Zahra Tahraoui almost 9 years ago