NAICS Code: 561720 SIC Code: 7349, completed by Perry Byers. The building cleaning industry has two main markets: residential and commercial. The residential market primarily consists of maid services, carpet, window and other like services. The commercial cleaning segment focuses primarily on janitorial services which provide a broader range to include carpet and floor care, window cleaning, vacuuming, etc. The cleaning services industry is a $46 billion dollar industry. The industry is expected to grow 5.5% annually through 2009 1 with current business trends toward outsourcing and purchasing by two income families looking for more leisure time.
The vertebral column (also known as the backbone or the spine), is a column of approximately 33 small bones, called vertebrae.The column runs from the cranium to the apex of the coccyx, on the posterior aspect of the body. It contains and protects the spinal cord.he vertebral column (also known as the backbone or the spine), is a column of approximately 33 small bones, called vertebrae.
The vertebral column is composed of a series of 31 separate bones known as vertebrae. There are seven cervical or neck vertebrae, 12 thoracic vertebrae, and five lumbar vertebrae. The sacrum is composed of five fused vertebrae, and there are two coccygeal vertebrae which are sometimes fused (fig.1). In the normal adult there are four curvatures in the vertebral column in an anteroposterior plane. These serve to align the head with a vertical line through the pelvis (fig. 2).he arch encloses an opening, the vertebral foramen, which helps to form a canal in which the spinal cord is housed. Protruding from the posterior extreme of each neural arch is a spinous process and extending from the lateral edges of each arch are transverse processes.