Final answer:
The fundamental excitable cell in the nervous system is the neuron. Neurons transmit electrical signals, called action potentials, to convey information and produce movements in response to stimuli. They are also involved in thought processes within the brain.
Step-by-step explanation:
The fundamental excitable cell in the nervous system is the neuron. Neurons are responsible for transmitting electrical signals, called action potentials, that convey information and produce movements in response to stimuli. They also play a crucial role in thought processes within the brain.
Neurons, the fundamental units of the nervous system, feature a cell body (soma), dendrites for receiving signals, and an axon for transmitting signals to other neurons or cells. Axon terminals release neurotransmitters, facilitating communication at synapses. Neurons exhibit electrochemical signaling, enabling the transmission of information throughout the nervous system, vital for cognition and behavior.