Neuron and Synapse Function

Neuron Structure and Function

Neurones are cells that transfer information. They are composed of a cell body, dendrites, and a axon. The dendrites conduct the message towards the cell body and the axon conducts the muscle away from the cell body. Action potential is a brief electric charge that travels down an axon. This is caused by the movement of positive ions in and out of the axon. There’s hold is the amount of stimulation needed to trigger a neural impulse. Resting potential is when there are more positive ions outside then inside. In resting potential there are negative ions in the axon this is called “net”. Depolarization is when the incoming message stimulates a section of the axon. Chanel’s in the membrane open to allow Na+ ions to enter the axon during depolarization. Repolarization is when Chanel’s open to allow k+ ions to exit the axons. The charge then returns to normal but causes the next axon to depolarize. Action potential sweeps along the axon membrane at a constant velocity.

A synapse structure includes tips of the terminal branches on the axon, the space between neurons and the ends of the dendrites on the receiving neuron. The axon terminal button produces the neurotransmitters. It stores the neurotransmitters in the synaptic vesicles which then recycles the neurotransmitters building blocks. When the action potential reaches the axon terminal it causes the synaptic vesicles to release neurotransmitters into the gap. The neurotransmitters then diffuse through the gap and bind to the receptors on the receiving neuron. The neurotransmitters then are recieved as inhibitory, which represses action potential on the receiving neuron or excitatory, which stimulates action potential on the receiving neuron.

GPA Requiements

Universities GPA requirements are extremely high and should be lowered in order to recruit hard working, well rounded students. Universities definition of a perfect student is one that receives a ninety or higher grade point average. The reality is that every high school teacher marks a different way and gives different tests. This is unfair and means your GPA is partially luck. Every student learns a different way, some are kinaesthetic learners, some audio learners, and others are visual learners. As much as teachers think they attend to every learning style, it is nearly impossible to please every students way of learning. This is why it is unfair that my future depends on what teacher I get. If universities only accept the highest graded students they are recruiting students that have dedicated themselves to school and getting the best possible mark. This is not necessarily a bad thing, but often these students do not have the well rounded skills to succeed in the world. Students stuck in their room studying everyday don’t have the chance to have a valuable work or volunteer experience. The students also most often do not have the social skills to create connections once they leave university. If the universities goal is to produce men and women that will excel in the working world, they should definitely be looking at more then a 90% GPA. Students getting the highest grades in high school are ones that learning and education comes easier too. When these students reach university and realize how much harder it is they will not know how to put in the extra work. Students that have spent high school working hard to understand and succeed in their coarse know what it means to work hard and find motivation. These motivated, hard working people that may have received a 80% average verse a 90% average already have the foundations to succeed in university courses and life. Lowering the GPA of universities will open up new opportunities for students that are well rounded and have a better chance at succeeding.

Dear my wife

I am safe and working hard too get home soon. Glad you and other women are contributing to our community very proud of you. I think it’s good women are working hard to contribute. Maybe when the war ends things will become more equal. That is very sad news about the children and women being taken for hard labour. Make sure you and the kids are safe I don’t know what I would do without you guys. I wish I didn’t have to be here so I could spend my nights with you but you know I didn’t have much of a choice. Try not to be influenced by all the propaganda we need to have our own opinion if we are going to make change in this world. I love you dearly be safe I will be home soon.

Love your husband