Commissural fiber
Commissural Fiber
Commissural fibers (pronunciation: /kəˈmɪʃərəl ˈfaɪbər/) are a type of neural fiber that connect the two hemispheres of the brain. They are part of the white matter of the brain, which is responsible for transmitting signals between different areas.
Etymology
The term "commissural" is derived from the Latin word "commissura", which means "a joining together". This refers to the function of these fibers, which is to join the two hemispheres of the brain. The term "fiber" is derived from the Latin word "fibra", which means "a thread or filament". This refers to the thread-like structure of these fibers.
Function
Commissural fibers play a crucial role in integrating information between the two hemispheres of the brain. They allow for communication between the left and right sides of the brain, enabling the coordination of functions such as motor control, sensory perception, and cognitive processes.
The most well-known group of commissural fibers is the corpus callosum, which is the largest white matter structure in the brain. Other groups of commissural fibers include the anterior commissure and the posterior commissure.
Related Terms
- Neuron: The basic working unit of the brain, a specialized cell designed to transmit information to other nerve cells, muscle, or gland cells.
- Axon: A long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body.
- Myelin: A fatty substance that surrounds and insulates the axons of some neurons, allowing for faster transmission of electrical signals.
- Synapse: The junction between two neurons or a neuron and a muscle where electrical or chemical signals are transmitted.
External links
- Medical encyclopedia article on Commissural fiber
- Wikipedia's article - Commissural fiber
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