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Neuron Communication – Psych 12

Neuron Structure

  • Neurons are cells that transmit information
  • They are composed of the cell body, dendrites, and axon
  • Dendrites : receive information from other neurons and sensory receptors
  • Nucleus : provides energy fo the Neuron to carry out its d’unions
  • Cell body : support the cell’s life support centre
  • Axon : carries neuron’s message to other body areas
  • Myelin sheath : covers the axon of some neurons and hell’s speed neural impulses
  • Terminal branches of axon : form junctions with other cells

Neuron Function

Action potential

  • The electrical charge that travels down an axon, caused by the movement of positive ions in and out
  • Revisiting potential is when more positive ions are on the outside
  • Depolarization is an incoming message that stimulates a section of he axon
  • The flow of depolarization is the sequential depolarization and repolarization which causes action potential to move continuously down the axon

Synapse Structure

  • A synapse includes the tips of terminal branches of axon, the tiny space between neurons and the ends of dendrites of receiving Neuron


Synapse Function

  • When a signal gets to the end of the axon, the chemical signal is sent to the next Neuron in the network
  • Axon terminal button : produces NT, stores NT in synaptic vesicles, recycle NT building blocks
  • Action potential reaches axon terminal
  • Action Potential causes synaptic vesicles to release NT in synaptic gap
  • NT diffuses through the gap and binds to receptors on receiving Neuron


  • NT message is received as inhibitory or excitatory which will either stimulate AP on receiving Neuron (excitatory) or respires the AP on receiving Neuron (inhibitory)



How it feels to be First Nation

I am proud of my synthesis essay because I struggled with ideas in the beginning but put in effort to bring everything together and spent time working on it to make each paragraph the best that I could do. For grade 12, my goals to improve are with quote formatting and developing my ideas so that they are more in depth.


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How does your environment affect your mood?

How does your environment affect your mood?

In the book, The Promise, written by Nicola Davies, a girl lives in a city of poverty. She describes everyone around her as hard and mean and the streets were all dark and dull. She believed she had become hard and mean as well. Because of the living conditions in the city, people resulted to theft and allowed the poverty they lived in to determine their mood and overall quality of life. One day, the girl had stolen a bag from an old woman, in a dark alley. The woman made her promise to plant what was in the bag. Not understanding, the girl agreed, she soon found the bag was full of acorns and as promised, she planted them. With time, many trees and plants of different colours grew throughout the whole city. She planted them in many other cities and believed it was a blessing. This did not change anybody’s financial situation but instantly brought colour and changed the atmosphere of the city. Humans are easily influenced by their surroundings and we need to help make the differences we want to see in our environment. This book shows how even a small change in the environment can affect our mood positively, despite other struggles in our life.

4 Types of Chemical Reactions

For this assignment, it was asked that we create an analogy with pictures for 4 types of chemical reactions : Synthesis, Decomposition, Single Replacement and Double Replacement. Using images of flowers and vases I showed each reaction along with  a general equation and an example for each.

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