Neuronal cell bodies, neuropil (dendrites and both unmyelinated axons and myelinated axons), glial cells (astroglia and oligodendrocytes) and capillaries.
Yes, a cup is made out of matter.
All matter is made up of tiny particles called Atoms.
I suppose that you think to the solid state of matter.
Every real substance is made of matter. You, the computer you are looking at, your shoes, your breakfast, your teacher and your desk are all different forms of matter.
Atoms
White Matter
the thalamic nuclei is made of unmyelinated axons which are gray matter
cortex is gray consisiting of neuron cell bodies.
That would be gray matter.
gray matter
Gray Matter
Brain tissue is called gray matter because it is gray.
The tissues found in the brain are gray matter and white matter. The gray matter is made up of unmyelinated neurons and it is the area of nerve connections and processing. The white matter is made up of myelinated neurons that connect the regions of gray matter to each other and the rest of the body. The white matter acts as the main information path that speeds up connection between the brain and distant parts of the body.
The gray matter of the brain is described like this.
All of the cerebral cortex is gray matter as it composed of neuronal cell bodies which are not insulated with myelin.
cell bodies and unmyelinated fibers
Gray Matter Interactive ended in 2005.