The Importance of Excretory Organs

The video explains the body's reliance on water and the role of kidneys in filtering blood to form urine. It highlights the liver's importance in blood filtration and the skin's role in excretion through sweat. Perspiration is discussed as a mechanism for cooling the body by expelling excess water and salts.

What is the primary function of the kidneys in the human body?

• To filter blood and remove waste

• To produce hormones

• To pump blood

• To digest food

Where are the kidneys located in the human body?

• In the chest cavity

• On the back wall of the lower abdomen

• In the brain

• In the legs

Besides the kidneys, which organ is crucial for filtering blood?

• The stomach

• The lungs

• The liver

• The heart

What role does the skin play in the excretory system?

• It stores fat

• It filters blood

• It absorbs nutrients

• It excretes waste through sweat

How does perspiration help the body?

• By increasing blood pressure

• By cooling the body and removing excess salts

• By strengthening bones

• By storing energy