Nervous system cells are called neurons. They have three distinct parts, including a cell body, axon, and dendrites. These parts help them to send and receive chemical and electrical signals.
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5. Central Nervous System (CNS)
Brain Spinal Cord
Peripheral Nervous System (PNS)
Sensory Neurons
Motor Neurons
Somatic Nervous System
• voluntary movements via
skeletal muscles
Autonomic Nervous System
• organs, smooth muscles
Sympathetic
- “Fight-or-Flight” responses
Parasympathetic
- maintenance
The Nervous System
16. A junction where the axon or
some other portion of one
cell (= presynaptic cell)
terminates on the dendrites,
soma, or axon of another
neuron (post synaptic cell).
The term was introduced in
nineteenth century by the
British neurophysiologist
Charles Sherrington