PSY 101 Lecture Notes - Lecture 7: Central Nervous System, Autonomic Nervous System, Peripheral Nervous System
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Inputs and outputs of the brain o inputs: sensory (afferent) neurons. Carry incoming information from the sense receptors to the cns o interneurons: internally communicate and intervene between the sensory inputs and motor outputs o outputs: motor (efferent) neurons. Carry outgoing information from the cns to muscles and glands. The nervous system o the nervous system consists of the central nervous system (cns) and the peripheral. Neurons: nerve cells that are the building blocks of the neural information system. Negative at rest o dendrites: the fibers on neurons that receive and pass on information to other neurons. All or nothing o axons: fibers on neurons that pass on information to other neurons, muscles, or glands. Action potential: the impulse a neuron fires. Brief electrical charge that travels down the axon. Synapse: junction between the axon tip of the sending neuron and the dendrite, or cell body, of the receiving neuron. o has a gap called the synaptic gap or cleft.
