Respiratory Structure & Function

Front

What is the diaphragm?

Back

A muscle located under the lungs that contracts and relaxes during breathing.

Front

What is the major respiratory organ that takes in oxygen and releases carbon dioxide?

Back

Lungs.

Front

What is the correct sequence for the path of oxygen through the respiratory system?

Back

Nose, pharynx, larynx, trachea, bronchi, bronchioles, alveoli.

Front

What structure is a passageway for both food and air?

Back

Pharynx.

Front

What is the function of the larynx?

Back

It is involved in sound production and protects the trachea against food aspiration.

Front

What are bronchi?

Back

The main passageways that branch from the trachea into the lungs.

Front

What are alveoli?

Back

Tiny air sacs in the lungs where gas exchange occurs.

Front

What is the role of the trachea in the respiratory system?

Back

It serves as the windpipe, conducting air to and from the lungs.

Front

What is the function of the nasal cavity?

Back

It filters, warms, and moistens the air we breathe.

Front

What is the role of the intercostal muscles?

Back

They assist in the expansion and contraction of the rib cage during breathing.