Examples of Nervous Tissue in the Human Body

📚 Quick Study Guide

• 🧠 Neurons: These are the fundamental units of the nervous system responsible for transmitting electrical signals. They consist of a cell body, dendrites (receiving signals), and an axon (sending signals).
• ⚡ Neuroglia (Glial Cells): These cells support, insulate, and protect neurons. Types include astrocytes, oligodendrocytes, microglia, and ependymal cells.
• 📍 Sensory Receptors: Specialized structures that detect stimuli (e.g., touch, temperature, pain) and convert them into electrical signals.
• 🔗 Nerves: Bundles of axons in the peripheral nervous system that transmit signals between the brain, spinal cord, and the rest of the body.
• 🧠 Brain: The control center of the nervous system, responsible for processing information, coordinating actions, and enabling higher-level functions.
• 척 Spinal Cord: A long, cylindrical structure that connects the brain to the peripheral nervous system and mediates reflexes.
• 💡 Synapses: Junctions between neurons where signals are transmitted chemically (neurotransmitters) or electrically.

🧪 Practice Quiz

1. Which of the following is the primary function of neurons?
   1. A. Supporting and insulating other cells
   2. B. Transmitting electrical signals
   3. C. Providing structural support to tissues
   4. D. Transporting nutrients to cells
2. Which type of neuroglia is responsible for forming the myelin sheath in the central nervous system?
   1. A. Astrocytes
   2. B. Microglia
   3. C. Oligodendrocytes
   4. D. Ependymal cells
3. Where are sensory receptors primarily located?
   1. A. Brain
   2. B. Spinal cord
   3. C. Peripheral tissues
   4. D. Nerves
4. What are nerves primarily composed of?
   1. A. Cell bodies of neurons
   2. B. Bundles of axons
   3. C. Neuroglia
   4. D. Synapses
5. Which part of the nervous system is the primary control center?
   1. A. Spinal cord
   2. B. Peripheral nerves
   3. C. Brain
   4. D. Sensory receptors
6. What is the main function of the spinal cord?
   1. A. Processing complex thoughts
   2. B. Connecting the brain to the peripheral nervous system
   3. C. Filtering blood
   4. D. Producing hormones
7. What occurs at a synapse?
   1. A. Neuron cell division
   2. B. Signal transmission between neurons
   3. C. Myelin sheath production
   4. D. Waste removal from neurons