Humans and animals -Biology Revision Ex. 1

What is the main function of this organ?

• remove excess water

• pump the blood throughout the body

• remove toxic substances

• break down the food

The organs that break down the food are . . .

• stomach

• kidneys

• small intestine

• large intestine

The major organ of the nervous system that help us think is . . .

• lungs

• heart

• brain

• backbone

The main organs in respiratory system are . . . , which releases . . . . . . gas into the air.

• heart

• lungs

• oxygen

• carbon dioxide

The major organ that pump blood through our body is . . . .

• 
• 
• 
• 

What is the main function of large intestine in the digestive system?

• absorbing nutrients

• mix the food with the enzymes

• breakdown harmful substances

• absorbing the remaining water

Which one is the correct function of this organ?

• filter the blood

• remove all the water

• break down the toxic substances

• filter the water in our body

Our Respiratory system is protected by . . . . and . . .

• ribs

• skull

• backbone

• diaphragm

Which of the following organs are found in the thorax?

• brain

• lungs

• kidneys

• heart

Which of the following organs are found in the abdomen?

• liver

• brain

• heart

• stomach

• intestines