Respiratory & Circulatory Systems

Front

What are the elastic sponge-like organs where gas exchange occurs?

Back

Lungs

Front

What gas do we exhale when we breathe out?

Back

Carbon dioxide

Front

Which letter points to the heart in a diagram?

Back

B

Front

Which system works with the circulatory system to provide our body with oxygen?

Back

Respiratory system

Front

What muscle contracts and releases to help the lungs bring air in and push air out?

Back

Diaphragm

Front

What is the primary function of the lungs?

Back

To facilitate gas exchange, allowing oxygen to enter the blood and carbon dioxide to be expelled.

Front

What is the role of the diaphragm in respiration?

Back

It contracts to create a vacuum that pulls air into the lungs and relaxes to push air out.

Front

What are alveoli?

Back

Tiny air sacs in the lungs where gas exchange occurs.

Front

What is the main function of the circulatory system?

Back

To transport oxygen, nutrients, and hormones to cells and remove waste products.

Front

What is the pathway of air from the nose to the lungs?

Back

Nose -> Trachea -> Bronchi -> Lungs -> Alveoli.