Additional images. 1  Dura mater (spinal section) 2  Diagrammatic representation of a section across the top of the skull, showing the membranes of the brain, etc. 3  Diagrammatic transverse section of the medulla spinalis and its membranes. 4  Spinal cord. Spinal membranes and nerve roots.Deep dissection. 5  Spinal cord.
exists and is an alternate of . Amateur is a term that describes work done by nonprofessionals. <i>Amateur</i> is a term that describes work done by nonprofessionals.
A passive activity is any activity involving a trade or business in which the. taxpayer does not materially participate. Material participation is defined as regular continuous and substantial. activity rendered on behalf of the trade or business. Real Estate and rental. activities are generally, per-se, passive.