Basic Science and Laboratory Activities

What waste product is removed through the lungs (paru-paru)?

• carbon dioxide

• oxygen

• amino acid

• hormones

• nutrients

What is the main function of the Excretory System (sistem ekskresi)?

• to excrete saliva

• get rid of waste products from your cells

• break down food for digestion

• circulate oxygen

Which of the following is not an organ of the excretory system?

• liver

• kidneys

• heart

• skin

In your own words, explain how carbon dioxide is removed from the body.

The ......... filters wastes from the blood.

• heart

• kidneys

• liver

• stomach

• skin

Food travels from the mouth to the stomach through the ....

• large intestine

• small intestine

• colon

• esophagus

• kidneys

How would the circulatory (peredaran darah) and respiratory systems (sistem pernapasan) be affected by asthma?

What happens when we exhale (breathe out=menghembuskan nafas)?

When we inhale (breathe in=menarik nafas), what happens to the pressure in the thorax (dada)?

What are the tiny air sacs (kantung udara) in the lungs called?

• Alveoli

• Bronchioles

• Pharynx

• Capillaries

• Larynx