If you place a drop of blood on a microscope slide and examine it with a powerful microscope, you will see many red shapes that look something like circular disks. these are red blood cells, which carry the oxygen you need throughout your body. are red blood cells the only cells in your body?

Analyze the impact of the availability of health services in the community and the world. research various school and community health services for people of all ages such as vision and hearing screenings and immunization programs. identify situations requiring professional health services for people of all ages such as primary, preventive, and emergency care.