PSYCH 100H Chapter Notes - Chapter Quiz 2 Extra Credit: Peripheral Nervous System, Autonomic Nervous System, Neuromuscular Junction
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Chapter 2 the biological perspective, readings for topic 3. An overview of the nervous system, p. 46. The nervous system is a network of cells that carries information to and from all parts of the body. There is the central nervous system and the peripheral nervous system. Central nervous system = brain & spinal cord. Peripheral nervous system = autonomic & somatic. Antagonist: chemical substances that block or reduce a cell"s response to the action of other chemicals or neurotransmitters. Agonists: chemical substances that mimic or enhance the effects of a neurotransmitter on the receptor sites of the next cell, increasing or decreasing the activity of that cell. It"s found at the neuromuscular junction (synapses between neurons and muscle cells). It stimulates skeletal muscles to contract but actually slows contractions in the heart muscle. Plays a key role in memory, arousal, and attention. What is the most common neurotransmitter that produces inhibition in the.
