1.the nose diaphragm and lungs are part of the_________system

circulatory
excretory
nervous
respiratory(my answer)

correct

respiratory.. correct

respiratory

That is correct! The nose, diaphragm, and lungs are indeed part of the respiratory system. The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.

To determine the correct answer, it is important to have some basic knowledge of human anatomy and physiology. The nose acts as the primary entrance for air into the respiratory system. The diaphragm is a dome-shaped muscle located at the base of the lungs, which plays a crucial role in the process of breathing by contracting and relaxing. The lungs are a pair of organs responsible for the exchange of oxygen and carbon dioxide.

By considering the specific functions of each body part and recognizing their role in the respiratory process, we can deduce that the correct answer is the respiratory system.