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Respiratory Problems: RDS and COPD

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Questions and Answers

What is the primary function of surfactant in the alveoli?

To decrease the surface tension of alveolar fluid (correct)

To increase the production of mucus in the lungs

To reduce the elasticity of the lungs

To increase the surface tension of alveolar fluid

What is the main characteristic of Chronic Obstructive Pulmonary Disease (COPD)?

Chronic and recurrent obstruction of airflow (correct)

Increased lung elastic recoil

Enhanced gas exchange

Reversible airflow obstruction

What is the primary consequence of emphysema in the lungs?

Destruction of the walls of the alveoli (correct)

Increased production of mucus

Decreased lung elastic recoil

Increased surface area for gas exchange

What is the primary cause of Respiratory Distress Syndrome (RDS)?

Lack of surfactant Signup and view all the answers

What is the primary characteristic of Chronic Bronchitis?

Excessive secretion of bronchial mucus Signup and view all the answers

What is the common risk factor for Emphysema and Chronic Bronchitis?

Long-term exposure to contaminants Signup and view all the answers

What is the primary source of body heat for endotherms?

Metabolic heat arising from energy metabolism, digestion, and muscle activity Signup and view all the answers

What is the primary response to a core temperature below ~ 35°C?

Shivering thermogenesis Signup and view all the answers

What is the mechanism of non-shivering thermogenesis?

Uncoupling of heat production and ATP synthesis in brown fat tissues Signup and view all the answers

What is the result of unsynchronized muscle contractions in shivering thermogenesis?

Generation of a large amount of heat Signup and view all the answers

What is the purpose of thermogenesis in endotherms?

To counteract continual heat loss to the surroundings Signup and view all the answers