Respiratory System

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 laryngitis?

Back

Laryngitis is the inflammation of the vocal folds, causing swelling and often resulting in hoarseness or loss of voice.

Front

What is the laryngopharynx?

Back

The laryngopharynx is a passageway for both air and food, located behind the larynx and leading to the esophagus and trachea.

Front

What is asthma?

Back

Asthma is a common respiratory disorder characterized by inflamed airways, leading to difficulty breathing, wheezing, and coughing.

Front

Trace the passage of air through the conducting zones.

Back

Air passes through the nose, nasal vestibule, nasal conchae, nasopharynx, oropharynx, laryngopharynx, and trachea.

Front

What is the role of the diaphragm in respiration?

Back

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

Front

What is the function of the intercostal muscles?

Back

The intercostal muscles assist in breathing by expanding and contracting the rib cage, aiding in inhalation and exhalation.

Front

What is the trachea?

Back

The trachea, or windpipe, is a tube that connects the larynx to the bronchi, allowing air to pass to and from the lungs.

Front

What is the difference between the conducting and respiratory zones?

Back

The conducting zone includes structures that transport air (e.g., trachea, bronchi), while the respiratory zone is where gas exchange occurs (e.g., alveoli).

Front

What are alveoli?

Back

Alveoli are tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.