Chapter 15 Respiratory System

Which of the following terms refers to the part of the respiratory tract that contains the smallest and most delicate bronchioles and alveoli within the lungs?

• Conducting portion

• Respiratory portion

• Upper respiratory system

• Lower respiratory system

The exchange of oxygen and carbon dioxide between the body's interstitial fluids and the external environment is referred to as ___________.

• internal respiration

• external respiration

• atelectasis

• cellular respiration

While at rest, the amount of air moving into or out of the lungs during a single respiratory cycle is called the ___________.

• tidal volume

• residual volume

• inspiratory reserve volume

• expiratory reserve volume

A segment of lung tissue that is bounded by connective tissue partitions is called a(n) __________.

• pulmonary lobule

• alveolus (alveoli)

• alveolar sac

• alveolar duct

Which of the following cells or structures in the lamina propria secrete onto the epithelial surface of the respiratory mucosa?

• Mucous (goblet) cells

• Alveolar macrophages

• Mucous glands

• Mucus layer

Which of the following events occur during inhalation?

• Thoracic volume increases, and pressure inside the lungs falls.

• Thoracic volume decreases, and pressure inside the lungs falls.

• Thoracic volume decreases, and pressure inside the lungs increases.

• Thoracic volume increases, and pressure inside the lungs increases.

What is the name of the passageways containing the last 150 ml of a typical inhalation that never gets farther than the conducting passageways and does not take part in gas exchange?

• Vital capacity

• Anatomic dead space

• Minimal volume

• Residual volume

Which of the following structures extends between the soft palate and the base of the tongue at the level of the hyoid bone?

• Nasopharynx

• Oropharynx

• Larynx

• Laryngopharynx

The respiratory epithelium consists of which of the following specific tissue types?

• Stratified keratinized squamous epithelium

• Simple columnar epithelium

• Ciliated columnar epithelium

• Stratified cuboidal epithelium

The space enclosed within the flexible tissues of the nose, where coarse hairs are found, is called the ___________.

• internal nares

• external nares

• nasal vestibule

• nasal conchae