If you think you know 97001-97004 backward and forward you may be surprised that you should avoid using E/M codes for physical therapists (PTs) and occupational therapists (OTs). However you can report 97001-97004 in addition to a separate E/M service on the same day.
Sponges do have several distinct types of cells, each with different functions. (See FIG.) The body wall of a sponge is perforated by numerous pores or ostia through which water is drawn into a central cavity called the spongocoel or central cavity. The osculum is a large opening at one end of the sponge through which all the resulting excurrent is evacuated.
The most prominent examples are the ears and nose. It is also a connective tissue in some joints. It prevents bones from grinding on each other, which can lead to arthritis. The function of cartilage is to act like bone but it is a little bit more flexible It acts as a cushion. For instance, you have discs of cartilage between each vertebra in your back. That keeps the bone from scraping together each time you bend over or move your back in any way.