Excretion

Question 0

Toxic substances

Answer 0

Are poisonous and can harm the cells of the body if not removed.

Question 1

Excretion

Answer 1

Is one of the characteristics of all living things. The removal of toxic chemicals made in the body during metabolism.

Question 2

We have 3 excretory organs

Answer 2

• Kidneys
• Lungs
• Skin

Question 3

Kidneys

Answer 3

The kidneys filter (remove urea and salts) as they can clean our blood

This process is called filtration

Question 4

Renal artery

Answer 4

Carries blood to the kidney

Question 5

Renal vein

Answer 5

Carries blood from kidney

Question 6

Uretar

Answer 6

Transports urine to the bladder

Question 7

Bladder

Answer 7

Stores urine

Question 8

Urethra

Answer 8

Releases urine

Question 9

Urea

Answer 9

Which is toxic is produced in the liver from excess protein

Question 10

Lungs

Answer 10

Carbon dioxide and water are waste products of the process of respiration in all cells of the body
They are carried to the lungs by the blood to be excreted

Question 11

Test for carbon dioxide

Answer 11

Limewater

Question 12

Test for water

Answer 12

Cobalt chloride paper

Question 13

Skin

Answer 13

Human skin has sweat glands which lead to pores at the surface - water, salt and a tiny amount of urea is excreted through these pores