NEET Zoology Human Excretory System MCQ Question
Which of the following statements about the human excretory system is correct?
Micturition is the voluntary release of urine controlled by the micturition reflex.
Urea is the most toxic nitrogenous waste excreted by humans.
The kidneys are responsible for filtering ammonia directly from the blood.
The average adult human excretes approximately 1 to 1.5 liters of urine daily.
Correct Answer
Detailed Explanation
Micturition involves the contraction of bladder muscles and relaxation of the urethral sphincter, which is part of the micturition reflex. Urea is less toxic than ammonia, and the kidneys filter urea, not ammonia directly.
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