PSY 111 Chapter Notes - Chapter 2: Brainstem, Adrenal Gland, Thalamus
Document Summary
Chapter 2: the biology of the mind: phrenology. Study of bumps on skull and their relationship to mental abilities and character traits. Yielded the idea that the brain might have different areas that do different things (localization of function: biological psychology. Dendrites receive messages from other cells (like ears) Terminal branches of axon form junctions with other cells. Axon sends messages away from cell body to other neurons, muscles, Myelin sheath covers axon of some neurons and helps speed neural glands impulses, axons are myelated until age 10ish, speeds up processing with development. Action potential neural impulse that travels down an axon like a wave some aren"t. Neuron receives signals from other neurons; some are telling it to fire and. When threshold is reached, the action potential starts moving. All or none response fires or doesn"t fire. Action potential travels down axon from the cell body to the terminal.
