Urea is made of:
protein stored in the urethra.
protein broken down in the liver.
protein broken down in the kidneys.
urine, salt & water.
Reabsorption of chloride ions from the glomerular filtrate in the kidney tubule is carried out by:
Osmosis
Diffusion
Active transport
Brownian movement
Which one of the following set of waste products is excreted by the lungs?
Carbon dioxide & oxygen
Carbon dioxide & water vapour
Nitrogen & carbon dioxide
Oxygen & water vapour
Which one of the following pairs carry waste products?
Renal artery and renal vein
Renal artery and ureter
Renal vein and urethra
Renal vein and ureter
Which is the cause of kidney failure?
Acute kidney injury
Smoking
Indigestion
Blood pressure
What is the source of the waste products that are excreted by the urinary system?
Metabolic processes
Undigested fiber
Pollutants in the water and food
Excess food
The mechanism of uric acid secretion in the nephron is:
Excretion
Ultra filtration
What is the functional filtration unit in the kidney?
Renal tubule
Renal corpuscle
Nephron
Glomerulus
A severe fall in blood pressure disturbs the function of kidneys and reduces:
renal filtration
glomerular filtration
reabsorption
secretion of nitrogenous wastes
Urea is transported by:
plasma
blood
RBC
WBC
