Questionário sobre Tecido Pulmonar

What type of epithelium lines the terminal bronchioles in normal lung tissue?

• Stratified squamous epithelium

• Ciliated pseudostratified columnar epithelium with goblet cells

• Simple cuboidal epithelium with ciliated and Clara cells

• Non-ciliated simple columnar epithelium

The main function of type I pneumocytes is:

• Production of pulmonary surfactant

• Acting as alveolar stem cells

• Formation of the blood-gas barrier for gas exchange

• Immune defense against pathogens

Which cell in the pulmonary alveolus is responsible for surfactant production?

• Alveolar macrophage

• Type I pneumocyte

• Type II pneumocyte

• Capillary endothelial cell

The walls of the pulmonary alveoli are mainly composed of:

• Smooth muscle tissue and type II collagen

• Type I pneumocytes, capillaries, and a small amount of connective tissue

• Pseudostratified columnar epithelium and abundant elastic fibers

• Type II pneumocytes and subepithelial adipose tissue

Which cell is typically observed within the alveolar space as part of pulmonary defense?

• Clara cell

• Goblet cell

• Alveolar macrophage

• Fibroblast

In histological sections of the lung, what differentiates bronchioles from bronchi?

• Bronchi do not have cartilage, bronchioles do.

• Bronchioles have seromucous glands, bronchi do not.

• Bronchi have cartilage and glands; bronchioles do not.

• Bronchioles are lined by squamous epithelium; bronchi, by cuboidal epithelium.

Which structure marks the transition between the conducting system and the respiratory portion of the lung?

• Segmental bronchus

• Terminal bronchiole

• Respiratory bronchiole

• Alveolar duct

In a histological section, how can an alveolar duct be identified?

• It is bounded by smooth muscle in the form of concentric rings.

• It is a tube lined by columnar epithelium with surrounding glands.

• It is an airway whose walls are almost entirely formed by alveoli.

• It contains numerous villi with central capillaries.

Pulmonary surfactant is essential for:

• Inducing the migration of alveolar macrophages

• Facilitating mucus flow in bronchioles

• Reducing the surface tension of alveoli and preventing collapse

• Stimulating the proliferation of type I pneumocytes

In histological sections of lung tissue, which structures indicate that the tissue is from the respiratory portion and not the conducting portion?

• Presence of mucous glands and cartilage

• Presence of bronchioles with cuboidal epithelium and Clara cells

• Presence of alveoli, alveolar ducts, and pneumocytes

• Presence of pseudostratified columnar epithelium with goblet cells