Final answer:
The statement is true: ingested liquids are the primary source of water for the body, with metabolic water production and water in foods also contributing to overall intake. Homeostasis involves balancing water intake and output, with kidneys regulating this balance and ADH aiding in water retention.
Step-by-step explanation:
The statement that ingested liquids are the major source of water for the body is true. Most water intake happens through the digestive tract, via liquids and food. However, it is also correct that a significant amount of water, approximately 10 percent, is generated during the end of aerobic respiration in cellular metabolism. This process is known as metabolic water production and shows the body's remarkable ability to internally manage water balance. Moreover, water is also ingested along with food, which contributes to the overall water intake.
Homeostasis, the balance of the body's internal environment, requires that water intake and output be balanced. The kidneys play a crucial role in this process, regulating water balance by adjusting the concentration of the urine based on the body's hydration levels. They conserve water if the body is dehydrated or expel excess water when necessary. Additionally, the hormone ADH (antidiuretic hormone) aids in water conservation by increasing water reabsorption in the kidneys. Water loss occurs through urine, skin evaporation, respiration, and digestive secretions, with most of it (approximately 2500 mL) being removed as urine.