Purpose of the urinary system - Ans -excrete nitrogenous wastes, excess solutes and
water from the body, filters waste from blood
kidneys - Ans -the primary organ of the urinary system filter waste products from the
blood
ureters - Ans -carry urine from kidneys to bladder
bladder - Ans -sac-like muscular organ that collects urine
urethra - Ans -tube that carries urine from the bladder to an exterior opening
nephrons - Ans -functional units of the kidney, adjust the composition of blood and
produce urine
renal artery - Ans -supplies unfiltered blood to the kidney
tubular reabsorption - Ans -useful materials return from the nephron to the blood,
occurs in the proximal tubule
tubular secretion - Ans -toxic substances are secreted back into the nephron to be
eliminated, occurs in the distal tubule
Bowman's capsule - Ans -Structure labeled B
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