Which system is essential for the transport of oxygen and nutrients throughout the body?

Which system is essential for the transport of oxygen and nutrients throughout the body?

• A. Circulatory System
• B. Excretory System
• C. Immune System
• D. Digestive System

Answer: (A)

The circulatory system is essential for the transport of oxygen and nutrients throughout the body because it includes the heart, blood vessels, and blood, which work together to distribute these vital substances. Oxygen, which is absorbed in the lungs, attaches to hemoglobin in red blood cells and is carried through the bloodstream to tissues and organs. Similarly, nutrients from digested food are absorbed into the bloodstream via the intestines and transported to cells to provide energy and sustain bodily functions. The efficiency of this system is critical for maintaining homeostasis and supporting the metabolic processes necessary for life. Other systems, while important in their own right, do not primarily focus on the transport of oxygen and nutrients. The excretory system is mainly responsible for eliminating waste products from the body; the immune system is involved in defending against pathogens; and the digestive system focuses on breaking down food and absorbing nutrients but does not transport them throughout the body on its own. Thus, the circulatory system is uniquely suited to this crucial role.

The circulatory system is essential for the transport of oxygen and nutrients throughout the body because it includes the heart, blood vessels, and blood, which work together to distribute these vital substances. Oxygen, which is absorbed in the lungs, attaches to hemoglobin in red blood cells and is carried through the bloodstream to tissues and organs. Similarly, nutrients from digested food are absorbed into the bloodstream via the intestines and transported to cells to provide energy and sustain bodily functions. The efficiency of this system is critical for maintaining homeostasis and supporting the metabolic processes necessary for life.

Other systems, while important in their own right, do not primarily focus on the transport of oxygen and nutrients. The excretory system is mainly responsible for eliminating waste products from the body; the immune system is involved in defending against pathogens; and the digestive system focuses on breaking down food and absorbing nutrients but does not transport them throughout the body on its own. Thus, the circulatory system is uniquely suited to this crucial role.