28.1 nervous systems recieve sensory input, interpret it, and send out

consists of the brain and, invertebrates, the spinal cord

Made up mostly of communication lines called nerves that carry signals into and out of the CNS

a cable like bundle of neuron extensions tightly wrapped in connective tissue

ganglia

Clusters of neauron cell bodies?

the conduction of signals from sensory receptors, such as light detecting cells

the interpretation of the sensory signals and the formulation of appropriate responses

the conduction of signals from the integration centers to effecto celles

muscle cells or gland cells, which perfom the body's responses

• Sensory neaurons.
• interneurons
• motor neaurons

convey signals from sensory receptors into the CNS

located entirely withint the CNS, the integrate data and then relay appropriate signals to other interneourons or to motor neurons