7 Feb 2025 TBL5

A 60-year-old male presents with chronic cough. Histological examination of his lung tissue shows destruction of alveolar septa and enlarged air spaces.

Which structural component is primarily affected?

• Elastic fibers

• Goblet cells

• Hyaline cartilage

• Type II pneumocytes

A 50-year old-man, chronic smoker presents with chronic cough. The investigation reveals  excessive mucus secretion in the bronchi.

What of the following structures is affected in this patient?

• Chondrocytes

• Elastic fibres

• Epithelium

• Goblets cells

A newborn presents with respiratory distress syndrome (RDS). Histological investigation of the lungs shows collapsed alveoli and a deficiency of a crucial substance.

Which of the following cells is primarily responsible for producing above condition?

• Alveolar macrophages

• Goblet cells

• Type I pneumocytes

• Type II pneumocytes

An 8-year-old boy is brought to the emergency department with shortness of breath and cough after getting the pungent smell. Investigation reveals narrowing of airway due to smooth muscle contraction and lack of cartilage.

which of the following structures most likely causes this symptom in this patient?

• Alveoli

• Secondary bronchus

• Terminal bronchioles

• trachea

A 65-year-old chronic smoker is suspected to have a growth on the lingual surface of the epiglottis. A biopsy is taken from the involved tissue.

Which of the following epithelial types lines the above surface of the tissue?

• Pseudostratified ciliated columnar epithelium

• Stratified columnar epithelium

• Stratified cuboidal epithelium

• Stratified squamous non-keratinized epithelium