13. Excretion in humans
A section of Biology, 0610
Listing 10 of 267 questions
Excretion is the process of removing waste products of metabolism from the body. Name the two main products of metabolism that need to be excreted from the human body. The kidney is one of the main excretory organs of the body. Its role is to filter the blood. Some substances leave the blood and are removed from the body in the urine. The concentration of protein in the blood entering the kidneys in the renal arteries is 83 g dm–3. State the concentration of protein that you would expect in the urine of a healthy person and explain your answer. concentration g dm–3 explanation Dialysis can be used to treat people whose kidneys do not function properly. shows dialysis treatment. blood pump movement of blood movement of dialysis fluid movement of substances in and out of blood .H\ blood from patient blood returns to patient bubble trap fresh dialysis fluid dialysis membrane used dialysis fluid dialysis unit Use to describe the process of dialysis and explain changes that occur in a person’s blood. Some people with kidney failure are given a kidney transplant. State one advantage and one disadvantage of having a kidney transplant instead of dialysis treatment. advantage disadvantage The liver is another excretory organ of the body. The liver breaks down hormones and drugs, such as alcohol. State one function of the liver other than the breakdown of hormones and drugs. Describe two effects on the body of long-term, excessive consumption of alcohol. Suggest one social implication of alcohol misuse.
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THEORY
2015
Paper 3, Variant 2
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267