What essential materials does the circulatory system provide to body cells?

What essential materials does the circulatory system provide to body cells?

• A. Enzymes
• B. Nutrients and oxygen
• C. Cortisol
• D. Amino acids

Answer: (B)

The circulatory system plays a crucial role in delivering key substances to body cells, and nutrients along with oxygen are among the most vital materials provided. Oxygen, which is essential for cellular respiration, is transported from the lungs to the tissues, enabling cells to produce energy. Additionally, the circulatory system carries nutrients absorbed from the digestive tract, such as glucose, fatty acids, and vitamins, directly to the cells where they are needed for growth, repair, and metabolic processes. While enzymes, cortisol, and amino acids are significant in various biological processes, they are not the primary functions of the circulatory system. Enzymes serve as biological catalysts within cells, cortisol is a hormone produced by the adrenal glands that regulates various metabolic functions and stress responses, and amino acids are the building blocks of proteins. Each of these substances has its importance, but the primary role of the circulatory system centers on ensuring that cells receive an adequate supply of both oxygen and nutrients.

The circulatory system plays a crucial role in delivering key substances to body cells, and nutrients along with oxygen are among the most vital materials provided. Oxygen, which is essential for cellular respiration, is transported from the lungs to the tissues, enabling cells to produce energy. Additionally, the circulatory system carries nutrients absorbed from the digestive tract, such as glucose, fatty acids, and vitamins, directly to the cells where they are needed for growth, repair, and metabolic processes.

While enzymes, cortisol, and amino acids are significant in various biological processes, they are not the primary functions of the circulatory system. Enzymes serve as biological catalysts within cells, cortisol is a hormone produced by the adrenal glands that regulates various metabolic functions and stress responses, and amino acids are the building blocks of proteins. Each of these substances has its importance, but the primary role of the circulatory system centers on ensuring that cells receive an adequate supply of both oxygen and nutrients.