A change in the environment is called a ____ The reaction to a stimulus is called the ____ . Spinal cord and ____ make up the central nervous system (CNS). Spinal nerves and ____ make up the peripheral nervous system (PNS). When there is a stimulus, the receptors in our sense organs are ____ to generate ____. These nerve impulses are transmitted by ____ to the CNS. Nerve cells are called ____. The 3 types of neurones are (in order): ____, ____, ____. A ____ is the junction/gap between two neurones. The neurones release chemicals that help transmit nerve impulses across the synapse. note: neurotransmitter is a chemical messenger that carries messages across synapse between neurones A sensory neurone has ____ dendron and a ____ axon than that of a motor neurone.

Check-in: Nervous System (part I)

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