A patient presents with significantly reduced lung compliance and an inability to fully exhale. Microscopic examination of lung tissue reveals thickened alveolar walls and loss of elastic fibers. Which of the following conditions is the MOST likely diagnosis?
Emphysema
Asthma
Pulmonary fibrosis
Cystic fibrosis
Related Questions
A rare genetic mutation affects the function of pulmonary surfactant. Which of the following would be the MOST direct consequence of this mutation?
Decreased airway resistance and increased airflow
Increased alveolar surface tension and difficulty inflating lungs
Enhanced gas exchange and increased oxygen diffusion
Reduced pulmonary blood pressure and improved circulation
A fully grown tadpole larva of respires through
Skin
Gills
Lungs
Trachea
A patient exhibits chronic hypoventilation, leading to respiratory acidosis. Which compensatory mechanism is MOST likely to be activated?
Decreased renal bicarbonate reabsorption
Increased renal bicarbonate reabsorption
Decreased renal hydrogen ion secretion
Increased respiratory rate
The windpipe is also known as the:
Larynx
Pharynx
Bronchi
Trachea
Among vertebrates, …A… use gills whereas reptiles, birds and mammals respire through the …B… . Amphibians like frogs can respire through …C… also. Mammals have a well adapted respiratory system
Select appropriate choice for the blanks A, B and C to complete the given NCERT statement
A-fishes, B-lungs, C-gills
A-fishes, B-lungs, C-dry skin
A-fishes, B-lungs, C-moist skin
A-mammals, B-gills, C-moist skin
Which of the following is the primary site of gas exchange in the lungs?
Trachea
Bronchi
Alveoli
Pleural cavity
Which one respires through gills?
Fish
Dog
Bird
Snake
In high-altitude environments, the partial pressure of oxygen is significantly reduced. Which physiological adaptation is LEAST likely to occur in individuals acclimatized to high altitude?
Increased erythropoietin production
Increased respiratory rate
Decreased 2,3-BPG levels
Increased capillary density in tissues
Mechanism of breathing vary among different group of animals depending mainly on the
A) Habits B) Habitats
C) Levels of organization D) Demand of situation
A) Habits
B) Habitats
C) Levels of organization
D) Demand of situation
