PSY 100 Lecture Notes - Lecture 4: Central Nervous System, Neuromuscular Junction, Peripheral Nervous System
Document Summary
Research associations between body, mind and behavior. Functions of parts of the nervous system. When threshold is reached, the neuron fires . Refer to a voltage diagram of a neuron to clarify. The ap either occurs or it does not. Ap does not change in size, speed, shape, etc. Transmission of information from one neuron to the next: Junction between the tip of an axon and the dendrite receiving the information. Neurotransmitters are released upon connection and meet the receptors of the receiving neuron. Sending neuron absorbs excess neurotransmitter in a process referred to as reuptake to cease the connection. Undersupply: tremors and decreased mobility in parkinson"s disease and adhd. Ach producing neurons decrease as alzheimer"s progresses. Mancy drugs act to alter nt activity. Prevents activity of the nt from being turned off. Causes dopamine and norepinephrine to remain active in synapse for a longer time at the junction. Binds and blocks a type of receptor at the neuromuscular junction.
