Respiratory Anatomy

The smallest conducting respiratory passageways are called the

• bronchioles

• trachea

• glottis

• alveoli

Which of the following structures closes off the larynx during swallowing

• glottis

• epiglottis

• esophagus

• palate

The anatomical name for the windpipe is the

• glottis

• epiglottis

• trachea

• vocal cords

The main function of the squamous epithelial cells in the alveolar walls is

• to create surfactant

• stimulate the diaphragm

• reduce surface tension

• gas exchange

The main function of surfactant in the alveoli is

• to reduce surface tension of the avleolar fluid

• gas exchange

• close off the larynx during swallowing

• separate the oral and nasal cavities

Structure A represents

• the epiglottis

• the hyoid bone

• thyroid cartilage

• circoid cartilage

Structure B represents

• the epiglottis

• the hyoid bone

• thyroid cartilage

• circoid cartilage

All of the following are functions of the larynx EXCEPT

• provides a patent airway

• acts in voice production

• serves as a switching mechanism to route food into the esophagus

• stimulation of the diaphragm

alveoli

• are specialized structures for gas exchange

• have a large surface area for their size

• are specialized for optimal diffusion

• all of the previous answers are true of alveoli

A chamber behind the nose and mouth that leads to the trachea

• pharynx
• trachea
• epiglottis
• larynx