The excretory system part 1

Which of the following are three major organs of the excretory system?

• skin, lungs, kidneys

• skin, heart, lungs

• skin, heart, kidneys

• heart, stomach, large intestines

Which of the following substances are NOT excreted by the excretory system?

• proteins

• water

• oxygen

• carbon dioxide

• salts

Which of the following makes up the body’s excretory system?

• kidneys

• lungs

• skin

• All are part of the excretory system.

Excrete water and salts contained in sweat from the body

• lungs

• kidneys

• skin

Remove wastes and excess water from the body

• skin

• kidneys

• lungs

Excrete carbon dioxide from the body

• skin

• lungs

• kidneys

How do the kidneys help maintain blood pH?

• by excreting dopamine

• by absorbing white blood cells

• by excreting hydrogen

• by absorbing red blood cells