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Multiple Choice
The kidneys are organs that primarily belong to which organ system?
A
Respiratory system
B
Digestive system
C
Urinary (renal) system
D
Integumentary system
Verified step by step guidance
1
Step 1: Understand the primary function of the kidneys. The kidneys filter blood to remove waste products and excess substances, forming urine.
Step 2: Identify the organ system responsible for waste removal and fluid balance in the body. This system is known as the urinary (renal) system.
Step 3: Recognize that the respiratory system is primarily involved in gas exchange (oxygen and carbon dioxide), not waste filtration.
Step 4: Note that the digestive system is responsible for breaking down food and absorbing nutrients, not filtering blood or producing urine.
Step 5: Understand that the integumentary system includes skin and related structures, which protect the body but do not perform the kidney's functions.