PSYCH 2AA3 Chapter Notes - Chapter 4: Cerebral Cortex, Neural Tube, Myelin
10 Dec 2014
School
Department
Course
Professor
Document Summary
4. 3 the developing nervous system: organization of mature brain, cellular. Neuron cell specialized in receiving/transmitting information. Cell body centre of the neuron, containing biological machinery to keep it alive. Dendrite receiving end of neuron, with a tree-like structure. Axon transmitting end of neuron, with a tube-like structure. Myelin fatty sheath wrapped around axon, allowing for rapid transmission. Terminal buttons end of the axon, with knob-like structure. Neurotransmitters chemicals carrying information for nearby neurons. Synapse gap between one neuron (axon) and another (dendrite: anatomical. Adult brain contains 50-100 billion neurons and weighs less than 3 pounds. Cerebral cortex wrinkled surface of brain (10 billion neurons), regulating many distinctly human functions. Frontal cortex controls personality and ability to make/perform plans. Corpus callosum thick bundle of axons (millions), linking hemispheres. Hemispheres left and right halves of cerebral cortex. Left reason, computation, language: right spatial perception, facial/emotional recognition, art/music, development of brain, after conception.
