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Biology Notebook: 07.01 Nervous and Endocrine SystemsObjectives:Explain how the two parts of the nervous system work togetherIdentify the major parts of the brainDescribe the structure and function of the central and peripheral nervous systemsExplain the connection between the nervous system and the endocrine systemKey Questions and TermsNotesNervous and Endocrine SystemsWhat are the two major systems if internal communication in our bodies?The nervous stems and the endocrine system How do the nervous and endocrine systems send messages differently?The nervous system sends high-speed electricalsignals along pathways of specialized cells. thechemical messages of the endocrine are spread in a slower nature, but still very importantThe Nervous SystemWhat is the main function of the nervous system?It takes information about the body’s internal and external environment, processes that information, and responds to it. What is the nervous system made up of?An intricate series od neurons that send and process signals through the bodyWhat is a neuron?A nerve cell, the fundamental unit of the nervous system that conducts electrical signals through the body. What are neural pathways?They send and receive information that controls our movement, perceptions, thoughts, and memory What are the two main categories of the nervous system?Central nervous system and peripheral nervous system What are the two parts of the central nervous system?Brain and spinal cord What are the parts of the peripheral nervous system?Motor (efferent) neurons and sensory (afferent)neurons NeuronsDescribe the following parts of a neuron:Cell bodyDendritesAxonAxon TerminalNerveCell body: the largest part of the neuron. It contains the nucleus, other organelles, and most of all, the cytoplasm Dendrites: short, branched extensions that spread out from the cell body. One neuron mayhave dozens of dendrites, which receive impulses from other neurons and carry those
impulses into the cell body. Axon: a long, branching extension that carries impulses away from the neuron’s cell body to other neurons. Axon Terminal: the end, or terminal, of the axon contains tiny vesicles filled with neurotransmitters, chemicals that transmit an impulse from the axon of one neuron to the dendrites of a neighboring neuron. Nerves: dendrites and axons from more than one neuron will often combine together and form bundles called nerves. Some nerves may be made up of a few neurons while others may be bundles of hundreds or thousands of neurons. Draw and label neuron.Nervous System Form and FunctionWhat are the two categories of neuron functions?Transmitting signals and processing signalsWhat are the functions of sensory and motor neurons?