PSYA01H3 Chapter 4: Chapter 4
Document Summary
Central nervous system brain and spinal cord. Spinal cord attaches brain to spinal cord. Nerves transmits information from brain to organs. Cranial nerves sensory information from head to muscles. Neurons sensory information, stores memories; dendrites and axon. Glia support for neurons, provides nutrients and protection. Soma cell body; largest part of neuron; controls cell; receives information from neurons. Axon carries message from soma to other cells. Neurotransmitter chemical message passed down from one neuron to another. Myelin fat that is a jelly so messages don"t get mixed up; increases speed of messages. Action potential electrical charge starting the transmission of a message. Ion channel entry or exit of ion. Ion transporter transports ion in or out of cell. All-or-none law once an action goes through, it has to go through. Sensory neurons external or environmental changes; notifies the cns. Motor neurons nerve to axon; muscles www. notesolution. com. What connects the neuron to muscle, another neuron.
