enumerate the various waste products produced in human beings
Answers
Answer:
after metabolic activities they are waste production called polytoxis
Answer:
Excretion in human beings:
Although the kidneys are the main organs of excretion, the skin, lungs and liver also help in excretion.
Skin:
Our skin has sweat glands, through which we excrete small amounts of water, urea and salts.
Liver:
The liver excretes bile, which contains bile pigments. These are produced by the breakdown of old RBCs in the liver. As hemoglobin breaks down, its iron is retained, while the pigment (haem) is excreted with the bile. The liver also excretes cholesterol.
Lungs:
The lungs help in getting rid of carbon dioxide, formed as a result of cellular respiration, through exhalation.
Excretory System in Man:
Our excretory system consists of kidneys, blood vessels that join them, ureters, urinary bladder and urethra. They help produce and excrete urine.
There are two bean-shaped kidneys that lie in the abdominal cavity, one on either side of the vertebral column. The kidneys are reddish brown. Each of them is about 10 cm long and weighs about 150 g. Although they weigh less, they receive a lot of blood for filtration.
A volume of blood nearly equivalent to that in the whole body passes through the kidneys every four or five minutes. The kidneys produce urine to filter out the waste products, like urea and uric acid, from the blood.
(A) Excretory Organs of Man (B) Internal Structure of a Kidney
Urine leaves each kidney through a tube called ureters. The ureters from both the kidneys are corrected to the urinary bladder that collects and stores urine. Ureters carry urine from the kidneys into the urinary bladder. The urethra is a canal that carries urine from the bladder and expels it outside the body.