Chapter 2: Neuroscience & Behavior

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Chapter 2: Neuroscience & Behavior

Chapter 2: Neuroscience & Behavior

Axon: The extension of a neuron, ending in branching terminal fibers, through which messages pass to other neurons or to muscles or glands.

Dendrite: The bushy, branching extensions of a neuron that receive messages and conduct impulses toward the cell body.

Neuron: A nerve cell; the basic building block of the nervous system.

Myelin Sheath: A layer of fatty tissue segmentally encasing the fibers of many neurons; enables vastly greater transmission speed of neural impulses as the impulse hopsfrom one node to the next.

Synapse: The junction between the axon tip of the sending neuron and the dendrite or cell body of the recieving neuron.

Franz Gall invented phrenology, a theory in which bumps on the head could reveal mental abilities. Although false, Gall's theory was one of the first stabs at revealing how the brain was structured and subsiquently worked.



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