11 Questions
What is the primary function of surfactant in the alveoli?
To decrease the surface tension of alveolar fluid
What is the main characteristic of Chronic Obstructive Pulmonary Disease (COPD)?
Chronic and recurrent obstruction of airflow
What is the primary consequence of emphysema in the lungs?
Destruction of the walls of the alveoli
What is the primary cause of Respiratory Distress Syndrome (RDS)?
Lack of surfactant
What is the primary characteristic of Chronic Bronchitis?
Excessive secretion of bronchial mucus
What is the common risk factor for Emphysema and Chronic Bronchitis?
Long-term exposure to contaminants
What is the primary source of body heat for endotherms?
Metabolic heat arising from energy metabolism, digestion, and muscle activity
What is the primary response to a core temperature below ~ 35°C?
Shivering thermogenesis
What is the mechanism of non-shivering thermogenesis?
Uncoupling of heat production and ATP synthesis in brown fat tissues
What is the result of unsynchronized muscle contractions in shivering thermogenesis?
Generation of a large amount of heat
What is the purpose of thermogenesis in endotherms?
To counteract continual heat loss to the surroundings
Learn about Respiratory Distress Syndrome (RDS) in premature newborns and Chronic Obstructive Pulmonary Disease (COPD), including the role of surfactant in alveolar function and the characteristics of these breathing disorders.
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