Excretion

Question 1

What is excretion?

Answer 1

Excretion is the removal of metabolic waste products including urea, carbon dioxide and excess water

Question 2

What is egestion?

Answer 2

Egestion is the removal of undigested food

Question 3

Differences between excretion and egestion?

Answer 3

Excretion is the removal of metabolic waste products
Products include excess water, urea and carbon dioxide
Organs involved are the kidneys, the skin and the lungs

While egestion is the removal of undigested food
Products include faeces
Organ involved is the anus

Question 4

What is the function of the kidney?

Answer 4

To remove waste from blood and remove urea

Question 5

What is the function of the renal artery?

Answer 5

To carry large amounts of blood from the aorta to the kidneys

Question 6

What is the function of the renal vein?

Answer 6

To carry blood from the kidney and ureter to the inferior vena cava

Question 7

What is the ureter?

Answer 7

To carry urine from the kidney to the bladder

Question 8

What is the bladder?

Answer 8

Acts as a reservoir for urine

Question 9

What is the urethra?

Answer 9

Allows urine to pass outside the body

Question 10

What is the function of the renal system?

Answer 10

To filter blood to remove urea, and to excrete it in the urine