Respiratory System Functions

The respiratory system functions to remove oxygen and supply carbon dioxide to the body.

The exchange of oxygen and carbon dioxide between the blood and the air-filled chambers of the lungs is called internal respiration.

The pharynx is a tube-shaped organ.

The respiratory zones are responsible for transporting, cleansing, warming, and humidifying the incoming air.

The olfactory receptors are located in the trachea.

The respiratory system includes the heart as one of its organs.

The trachea ends by dividing into the 4 primary bronchi at the midthorax.

The tracheal mucosa contains stratified squamous epithelium with goblet cells.

Smoking destroys respiratory cilia, necessitating sneezing for mucus propulsion.

The submucosa contains serous glands that produce the mucus that lines the trachea.

The secondary bronchi are divided into 4 on the right and 3 on the left.

The laryngopharynx is a common passage for both food and air.

The trachea is continuous with the larynx superiorly.

The pharyngeal tonsil is located on the posterior wall of the laryngopharynx.

The vocal folds can act as a sphincter during conditions such as coughing.

The oropharynx is lined by respiratory epithelium.

The nasopharynx is a common passage for both food and air.