Nervous tissue: Specialized tissue composed of neurons and glial cells responsible for transmitting electrical and chemical signals.
Central Nervous System (CNS): Comprises the brain and spinal cord, responsible for processing and integrating information.
Peripheral Nervous System (PNS): Network of nerves connecting the CNS to limbs and organs, transmitting sensory and motor information.
Neural extracellular matrix: The supportive environment surrounding neurons and glial cells providing structural support.
Nervous tissue primarily consists of neurons and glial cells working together to transmit and support neural signals. This organization enables rapid communication within the body, which is essential for bodily functions. The CNS processes information centrally, handling complex integration, while the PNS transmits sensory input from the body to the CNS and motor commands from the CNS to the body. The structural organization of nervous tissue is designed to facilitate this swift and efficient communication system.
1. What are the main cellular components that make up nervous tissue?
2. What is the correct chronological order of signal transmission within a neuron?
3. How does the immune function of microglia contribute to neural health in practical terms?
Nervous tissue — composition?
Neurons and glial cells.
Neuron — main function?
Transmit electrical and chemical signals.
Dendrites — role?
Receive incoming signals.
Myelin sheath — function?
Insulates axons, speeds signals.
Glial cells — support roles?
Support, insulate, protect neurons.
Chemical synapse — structure?
Presynaptic terminal, cleft, postsynaptic receptors.
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