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Metabolic activities that generate nitrogenous waste material in human being are removed by:
the vascular system
the excretory system
the circulatory system
the respiratory system
the excretory system
In human beings, the metabolic activities generate nitrogenous waste products such as urea, uric acid, and creatinine, which are toxic to the body. These nitrogenous wastes are primarily removed and filtered out from the blood by the excretory system, which includes organs like kidneys, ureters, urinary bladder, and urethra.
In human beings, the metabolic activities generate nitrogenous waste products such as urea, uric acid, and creatinine, which are toxic to the body. These nitrogenous wastes are primarily removed and filtered out from the blood by the excretory system, which includes organs like kidneys, ureters, urinary bladder, and urethra.
Just like a water filtration plant removes harmful impurities and toxins from dirty water before releasing clean water and discarding the waste sludge, the excretory system filters out toxic nitrogenous wastes from the bloodstream to keep the body clean and healthy.
K.U.U.U. тАФ Kidneys, Ureters, Urinary bladder, Urethra (the path of urine elimination).
Amino┬аAcidsтЖТ\text{Ammonia}тЖТ\text{Urea (in Liver)}тЖТ\text{Excreted via Kidneys}$
Blood containing nitrogenous wastes is brought to the kidneys via the renal artery. Inside the kidneys, functional units called nephrons filter the blood through a network of capillaries (glomerulus). Useful substances are reabsorbed, while toxic nitrogenous wastes are dissolved in water to form urine, which is then transported through the ureters to the urinary bladder and eventually expelled through the urethra.
The primary nitrogenous waste in humans is urea, synthesized in the liver.
Kidneys are the chief excretory organs containing millions of filtering units called nephrons.
Urine formation involves glomerular filtration, tubular reabsorption, and tubular secretion.
Lungs also remove gaseous metabolic waste (CO2тАЛ), but nitrogenous waste is handled entirely by the excretory system.
Maintains osmotic balance and blood pressure
Prevents toxic accumulation of nitrogen compounds in tissues
Renal dialysis in case of kidney failure
Urinalysis for clinical diagnosis of metabolic disorders
Option A (vascular system) transports blood containing wastes, but does not remove them.
Option C (circulatory system) is responsible for transport, not elimination.
Option D (respiratory system) primarily eliminates carbon dioxide and water vapor.
B is correct тАФ Metabolic activities that generate nitrogenous waste material are removed by the excretory system.
Remember that while the circulatory system transports metabolic wastes, it is the excretory system (specifically the kidneys) that actually filters and removes them from the body.
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