Excretion

What is a function of the liver?

• A converting bile to urea

• B converting urea to amino acids

• C deamination of amino acids

• D deamination of carbon dioxide

The diagram shows a kidney and associated structures.

What is the name of structure X?

• A pulmonary artery

• B pulmonary vein

• C renal artery

• D renal vein

The table shows the presence or absence of chemicals in solution in different parts of a healthy kidney. Which row is correct?

• A

• B

• C

• D

A patient has dye injected into the blood supply to his kidneys. The dye appears in his excretory system as shown.

Which part is blocked?

• A the kidney

• B the ureter

• C the bladder

• D the urethra

The diagram shows a section of a kidney

What are the correct labels OF X.Y.Z

• A cortex medulla ureter

• B cortex ureter medulla

• C medulla cortex ureter

• D medulla ureter cortex

In which order does urea pass through structures in the body?

• A kidney → ureter → liver → urethra

• B kidney → urethra → liver → ureter

• C liver → kidney → ureter → urethra

• D liver → urethra → kidney → ureter

Blood is filtered in the kidneys. After this filtration, some substances are reabsorbed into the blood and other substances pass out of the body in the urine. Which line shows the correct movement of substances in a healthy person?

• A

• B

• C

• D

What describes the excretion of urea?

• A

• B

• C

• D

Which substance is lost from the body by the kidneys, lungs and skin?

• A carbon dioxide

• B excess ions

• C urea

• D water

A healthy person eats a very high-protein diet. What effect will this have on their urine?

• A It will contain amino acids.

• B It will contain glucose.

• C It will contain more urea.

• D It will contain more water.