Dendrites

Dendrites are the branch-like extensions of a neuron that receive signals from other neurons and transmit those signals to the cell body. They play a crucial role in the transmission of information throughout the nervous system.

Structure of Dendrites

Dendrites are covered in tiny protrusions called dendritic spines, which increase the surface area available for forming connections with other neurons. These connections, known as synapses, are the points where signals are transmitted between neurons.

Function of Dendrites

The main function of dendrites is to receive chemical signals from neighboring neurons at the synapses and convert them into electrical signals. These electrical signals then travel to the cell body, where they are integrated with signals from other dendrites. If the combined signals are strong enough, they trigger the neuron to generate its own electrical signal, known as an action potential, which travels down the neuron's axon to communicate with other neurons.

Study Guide

1. What are dendrites?
2. Describe the structure of dendrites.
3. What is the function of dendrites?
4. How do dendrites transmit signals within the nervous system?
5. Explain the role of synapses in dendritic function.

Understanding the structure and function of dendrites is essential for comprehending how neurons communicate with each other and how information is processed in the brain and nervous system.