How is the diaphragm work to change air pressure in the lungs, and as a result, cause breathing?

Which description shows the best balance of physical social and mental/edmonton health

How would you compare a health care system in ancient egypt and a interdisciplinary health care team? a) these systems are quite similar; the only difference is that interdisciplinary teams today have better technology. b) these systems are very different; in ancient egypt, the team was all ranked the same, where today, the teams all have different rankings based on importance. c) an interdisciplinary team shares goals and responsibilities. in ancient egypt, each level of professionals had different goals and responsibilities. d) today's interdisciplinary teams are structured as hierarchies. in ancient egypt, these teams were patient focused.

Which two levels of the spine that can undergo flexion and extension?