Milady Esthetics State Board Practice Test

How does the blood contribute to overall health?

1. By storing fat

2. By carrying nutrients and oxygen

3. By regulating temperature only

4. By buffering acids in the body

The correct answer is: By carrying nutrients and oxygen

The blood plays a critical role in overall health primarily by carrying nutrients and oxygen to various parts of the body. This process is essential for cellular metabolism and energy production, enabling organs and tissues to function properly. Oxygen, obtained from the lungs, is transported by red blood cells to every cell in the body, where it is used to produce ATP – the energy currency of cells. Additionally, blood carries nutrients absorbed from the digestive system, including glucose, amino acids, and fats, which are vital for growth, repair, and maintenance of bodily functions. While blood does have other important roles, such as regulating temperature and buffering acids, its fundamental function of transporting oxygen and nutrients is crucial for sustaining life and promoting health. This transport system underpins all other physiological processes, making it a key contributor to overall health and well-being.