Question

the respiratory system consist of all the following except:
a pharynx
b aorta
c nose
d lungs

Explanation:

The respiratory system includes structures like the pharynx (part of the upper respiratory tract), nose (entrance for air), and lungs (where gas exchange occurs). The aorta is the main artery in the circulatory system, carrying oxygenated blood from the heart, so it's not part of the respiratory system.

Answer:

B. aorta