Glossary of Key Terms

• Action Potential: An electrical impulse that travels along the axon of a neuron, enabling the transmission of signals within the nervous system.

• Central Nervous System (CNS): Comprising the brain and spinal cord, the CNS is responsible for processing and integrating information from the body's internal and external environments.

• Dendrite: A branched extension of a neuron that receives signals from other neurons.

• Endocrine System: A network of glands that secrete hormones into the bloodstream, regulating various bodily functions.

• Hormone: A chemical messenger produced by endocrine glands that influences specific target cells or organs.

• Immune System: A complex system of cells and organs that protects the body from infection and disease.

• Neurone: A nerve cell that transmits electrical and chemical signals throughout the nervous system.

• Neurotransmitter: A chemical substance released by neurons to transmit signals across synapses.

• Peripheral Nervous System (PNS): The network of nerves that connects the CNS to the rest of the body, transmitting sensory and motor signals.