When nursing first started, there was one general nurse who took care of all the different types of medical care needs. However, with increased specialization, enhanced education and training, and more advanced technology, nurses now are employed in a wide variety of positions in many different institutions of care as well as in people's homes. Most of the positions fall into the larger nurse descriptions of registered nurse, nurse practitioner, licensed practical nurse and home health aids.
eHow Article: About Detailed Nurse Job Descriptions