NeuroAnatomh

• Receptor detech stimuli from envi
• Sensory (Afferent)

  “CNS”

  • Recieve impules directly from receptors “from any organs to the brain”
  • Nerve fibers responsible for bringing sensory info to the brain
  • Unipolar
• Motor “Efferent“ Neurons

  • Nerve fibers responsible for carrying signals from the brain to "PNS" to initiate action.

  Controls muscles/glands.
• Internuncial/Interneurons /Association Neurons (CNS)

  • found in the brain/spinal cord.
  • Transmit impulses for interpretation/processing /Decision making.
  • "Middle man"
  • Multipolar (one axon and two more dendrites)
• Neurotransmitters

  1. Adrenaline: fight or flight.
  2. Noradrenaline: Concentration.
  3. Dopamine: Pleasure.
  4. Serotonin: Regulate mood, appetite, sleep, memory, and learning.
  5. GABA (Gamma-aminobutyric acid): Calming, reduce activity of neurons.
  6. Acetylcholine: learning. (muscle contraction)
  7. Glutamate: excitatory neurotransmitters, enhance activity, learning/memory
  8. endorphins: euphoria, Pleasure, and pain reliefs
• Synapse - Area where two neurons come close enough to one. They pass chemical signals from one cell to another.
• Diffusion - Drift away the vesicles.
• Synaptic cleft - Provide space for chemical transmission of messages.
• Neurotransmitters (Vesicle) - Contains thousands of neurotransmitters.
• Reuptake - the neurotransmitters can now recycled
• Presynaptic Neurons (sending) - Transmit signal toward synapses
• Action potential - Excited by electrical signals. Converted to chemical signal (Neurotransmitter release) with the use of presynaptic terminal.
• The left over vesicle will be breakdown by enzymes
• Receptor - attach to neurons and send signals to the brain.
• Postsynaptic Neurons - Contain specialize receptors. Transmit signal away from synapses.
• Chemical synapses - neurotransmitter are released at axon terminal. Use neurotransmitters as well as receptor to propagate signals.
• Synaptic Vesicle (SUS) - small, electron - lucent that clustered at presynaptic.
• Mid sagittal plane - Medial cut
• Coronal Plane - Frontal Cut
• Transverse - Divided body to upper and lower limb
• White matter - Myelinated fiber tracts
• Gray Matter - Cell bodies, dendrites, unmyelinated fibers, glia cells