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COGSCI 115 Final Exam Questions and Answers 100% Pass
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COGSCI 115 Final Exam Questions and Answers 100% Pass [2] - how many pounds if your brain? - how many neurons in the brain? - how many synaptic connections for an average neuron to other neurons? - what percent of body oxygen and glucose is used by the brain? - Your brain uses up ten times m...

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  • January 9, 2025
  • 25
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • cogsci 115 final exam questions and answers 100 p

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  • Cognitive Science
  • Cognitive Science

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COGSCI 115 Final Exam Questions
and Answers 100% Pass

[2]


- how many pounds if your brain?


- how many neurons in the brain?


- how many synaptic connections for an average neuron to other neurons?


- what percent of body oxygen and glucose is used by the brain?


- Your brain uses up ten times more energy when you're thinking hard - ✔✔- 3 lbs


- 86 billion


- 1000 and up to 200,000 Purkinje cells


- 20%


- False


[2] What is the level of organization of the nervous system? - ✔✔Cells: individual

neurons


Tissue: nerves, ganglia




EMILY CHARLENE © 2025, ALL RIGHTS RESERVED 1

,Organ: brain and spinal cord


System: nervous system


[2] soma - ✔✔cell body of a neuron


[2] dendrite - ✔✔branched, treelike extensions attached to the soma of a neuron;

receives information from neurotransmitters released from terminal button


[2] axon - ✔✔extension of a neuron, ending with branching terminal fibers which send

messages to other neurons or muscles or glands


[2] terminal button - ✔✔bud at the end of a branch of an axon; forms synapses with

other neurons; sends information to those neurons via neurotransmitters


[2] neurotransmitter - ✔✔chemical released by a terminal button; has an excitatory or

inhibitory effect on other neurons


[2] myelin sheath - ✔✔- covers the axon with a layer and prevents messages from

traveling between each sheath


- composed of glial cells (support cells of CNS)


- increases speed of neural impulses (jumps from each node of Ranvier to another)


- decreases amount of energy needed for neural conduction


[2] action potential - ✔✔all or none phenomenon; propagates a firing from one end of

the axon to the other




EMILY CHARLENE © 2025, ALL RIGHTS RESERVED 2

, [2] synapse - ✔✔junction between terminal button of a neuron and membrane or

dendrite of another


[2] synaptic gap - ✔✔area where neurotransmitters are released into after an action

potential makes it to the terminal button, triggering the release of presynaptic

membrane (holding the neurotransmitters)


- released into synaptic cleft


[2] neurotransmitter - ✔✔chemical released to bind to receptor sites; may cause

inhibitory or excitatory effects


[2] reuptake - ✔✔transporters return neurotransmitters to the terminal button and the

postsynaptic effects are stopped (back into cytoplasm)


[2] enzymatic deactivation - ✔✔destruction of a neurotransmitter by an enzyme after its

release (e.g. destruction of acetylcholine by acetylcholinesterase)


[2] neurogenesis - ✔✔production of new neurons


- stem cells in brain can divide and produce new neurons


- in the hippocampus, olfactory bulb, amygdala, cerebellum


- develops new synaptic connections


[3] Central System System - ✔✔the brain and spinal cord




EMILY CHARLENE © 2025, ALL RIGHTS RESERVED 3

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