Excretion Defecation is the elimination of feces which is mainly undigested food products Excretion is the elimination of the waste products of metabolism Excretory organs Skin &#9;excretes perspiration Liver &#9;excretes bile pigments Lungs &#9; remove carbon dioxide and water Kidneys Produce urine Consists of three regions, the cortex, medulla, and the renal pelvis Path of Urine Urine passes from the kidneys to the ureters to the bladder.
(the elimination of feces; is mainly; undigested food products)
the elimination of feces
is mainly
undigested food products