Final answer:
The nose and lungs are part of the respiratory system, which exchanges gases, provides oxygen to the blood, and expels carbon dioxide. The respiratory system includes the nasal passages, pharynx, larynx, trachea, bronchi, bronchioles, and alveoli. The pharynx is an organ shared by the digestive and respiratory systems.
Step-by-step explanation:
The nose and lungs are part of the respiratory system. This system is responsible for the exchange of gases, delivering oxygen to the blood, and removing carbon dioxide from the body. The respiratory system includes structures such as the nasal passages, the lungs, and the trachea, through which the air flows into and out of the body. In the lungs, gas exchange occurs across the walls of capillaries lining tiny air sacs known as alveoli. Oxygen from inhaled air passes into the blood, and carbon dioxide from the blood is expelled into the exhaled air. This system works closely with the circulatory system to perform its main function of gas exchange.
The respiratory system needs the circulatory system to transport oxygen from the lungs to the body's cells and to carry carbon dioxide back to the lungs for exhalation, which is a vital part of the gas exchange process. The organs of the respiratory system, encountered by air entering the body, are in the following order: nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, and finally the alveoli.
The organ that is part of both the digestive and respiratory systems is the pharynx, which functions as a pathway for both air and food.