Respiratory System

Which 4 are examples of lung volumes?

• Lung volume

• Vital capacity

• Residual volume

• Total lung capacity

• Tidal volume

Tidal volume is the volume of air breathed in and out with each breath. Under normal conditions, roughly how much is this?

• 850m³

• 350m³

• 500m³

• 4800m³

The larynx is also known as the ____________.

The trachea is also known as the windpipe. What is it surrounded by to help maintain it's shape and allow airflow?

• Bone

• Blood vessels

• Cilia

• Cartilage

Gas exchange occurs when gasses move from...

• An area of high concentration to low concentration

• An area of low concentration to high concentration

The muscles that contract and relax to increase and decrease the size of the thoracic cavity are called the external _____________ muscles.

The lungs are never fully emptied of air, otherwise they would collapse. What is the air called that remains in the lungs after maximal expiration?

• Vital capacity

• Residual volume

• Tidal volume

• Total lung capacity

Vital capacity is the amount of air that can be forced out of the lungs after maximal inspiration. The volume is usually around ?

• 1800cm³

• 5000cm³

• 3800cm³

• 4800cm³

The dome shaped muscles that pulls down to increase the size of the thoracic cavity during inspiration is called the ____________.

What happens to the tidal volume during exercise?

• It goes down

• It goes up

• It stays the same