5 Questions
Which type of fibers are located medially on both sides of the pyramidal tracts?
Corticonuclear fibers
What is the location of the corticopontine fibers in the internal structure?
Most medially
Which type of fibers are involved in the transmission of voluntary motor signals from the cortex to the spinal cord?
Corticospinal fibers
Which type of fibers are located most laterally in the internal structure?
Temporo-parieto-occipito-pontine fibers
What is the general characteristic of the internal structure of the descending tracts?
Exceptionally white matter
Study Notes
Internal Structure of White Matter
- Descending tracts are found in white matter
- Corticospinal fibers, also known as pyramidal tracts, are located in the middle
- Corticonuclear fibers are situated medially on both sides of the pyramidal tracts
- Corticopontine fibers, Frontopontine fibers, and Temporo-parieto-occipito-pontine fibers are other types of fibers found in white matter
- Frontopontine fibers are located most medially
- Temporo-parieto-occipito-pontine fibers are situated most laterally
This quiz covers the internal structure of the brain, including the organization of descending tracts such as corticospinal, corticonuclear, and corticopontine fibers. Test your knowledge of brain anatomy!
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