Respiratory System Review

Front

What happens during exhalation?

Back

The diaphragm and intercostal muscles relax, causing the volume of the thoracic cavity to decrease and pressure to increase, pushing air out of the lungs.

Front

What is the main airway also known as?

Back

Trachea

Front

What occurs when air pressure inside the lungs is less than atmospheric pressure?

Back

Air moves into the lungs.

Front

What is the role of the intercostal muscles in breathing?

Back

They assist in expanding and contracting the ribcage during breathing.

Front

In which direction does the diaphragm move during inhalation?

Back

Downwards.

Front

What is the function of the diaphragm in respiration?

Back

The diaphragm contracts to increase the volume of the thoracic cavity, allowing air to flow into the lungs.

Front

What is the process of gas exchange in the lungs called?

Back

External respiration.

Front

What is the primary muscle involved in breathing?

Back

Diaphragm.

Front

What is the term for the tiny air sacs in the lungs where gas exchange occurs?

Back

Alveoli.

Front

What is the difference between inhalation and exhalation?

Back

Inhalation is the process of taking air into the lungs, while exhalation is the process of expelling air from the lungs.