In the urinary system, a method for removing waste material from the blood is:

• A. Glomerular filtration in the kidneys
• B. Bile secretion from the liver into the small intestine
• C. Pulmonary ventilation in the lungs
• D. Peristalsis moving food through the large intestine

Answer: (A)

Verified step by step guidance

1. Identify the main function described in the problem: removing waste material from the blood within the urinary system.
2. Recall that the urinary system primarily involves the kidneys, ureters, bladder, and urethra, with the kidneys playing a key role in filtering blood.
3. Understand that glomerular filtration is the process in the kidneys where blood plasma is filtered through the glomerulus, removing waste and excess substances to form urine.
4. Recognize that bile secretion from the liver, pulmonary ventilation in the lungs, and peristalsis in the intestines are processes related to other organ systems and functions, not directly involved in filtering blood waste in the urinary system.
5. Conclude that glomerular filtration in the kidneys is the correct method for removing waste material from the blood in the urinary system.