What type of matter constitutes the inner portion of the cerebrum?

The inner portion of the cerebrum is primarily composed of white matter. White matter consists of myelinated axons that facilitate communication between different regions of the brain. This myelination gives the white matter its characteristic color and plays a crucial role in the transmission of signals throughout the central nervous system.

In contrast, gray matter is found on the surface of the cerebrum, known as the cerebral cortex, and includes neuronal cell bodies, dendrites, and synapses. Neural tissue is a broader term that encompasses both gray and white matter, so it does not specifically answer the question about the inner portion of the cerebrum.

Understanding the distinction between gray and white matter is important in the context of brain anatomy and physiology, as it relates to how information is processed and communicated within the brain's various structures.