Question

practice it
what is the role of the tubules in the nephron?
reabsorbs important substances such as water, glucose, and salt from the filtrate, while eliminating waste products such as urea and excess ions.
assists in the breakdown of food in the small intestine.
produces insulin to help regulate blood sugar levels.
transports oxygen from the lungs to the bodys tissues.
regulates the bodys temperature by sweating.

Explanation:

The nephron is the functional unit of the kidney. The tubules in the nephron play a crucial role in processing the filtrate formed in the glomerulus. They reabsorb essential substances like water, glucose, and salts back into the bloodstream. At the same time, they secrete waste products such as urea and excess ions into the filtrate to be excreted as urine. The other options are incorrect:

• The breakdown of food in the small intestine is related to digestive enzymes and processes, not nephron tubules.
• Insulin is produced by the pancreas, not the nephron tubules.
• Transport of oxygen from lungs to tissues is the role of red blood cells and the circulatory system.
• Body temperature regulation by sweating is a function of the integumentary system (skin).

Answer:

Reabsorbs important substances such as water, glucose, and salt from the filtrate, while eliminating waste products such as urea and excess ions.