Textbook Question
Identify the three regions of the male urethra.
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25. The Urinary System
Introduction to the Urinary System
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In the urinary system, which organ primarily filters the blood to remove wastes and regulate water and electrolyte balance?
A
Ureters
B
Kidneys
C
Urinary bladder
D
Urethra
Verified step by step guidance1
Identify the main organs involved in the urinary system: kidneys, ureters, urinary bladder, and urethra.
Understand the primary function of each organ: the kidneys filter blood to remove wastes and regulate water and electrolyte balance; ureters transport urine from kidneys to bladder; urinary bladder stores urine; urethra expels urine from the body.
Focus on the organ responsible for filtering blood, which involves removing metabolic wastes and maintaining homeostasis of water and electrolytes.
Recognize that the kidneys contain nephrons, the functional units that perform filtration, reabsorption, and secretion to produce urine.
Conclude that the kidneys are the primary organs that filter blood and regulate water and electrolyte balance in the urinary system.
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