Pulmonary Anatomy and Physiology Flashcards

Flashcards based on lecture notes on pulmonary anatomy and physiology.

What is ventilation?

Process of moving air in and out of lungs.

What is alveolar ventilation?

Gas exchange.

How many lobes are in each lung?

3 lobes in the right lung, 2 lobes in the left lung.

What is the role of epithelial tissue in the lungs?

Lines the airways and alveoli.

What are alveoli?

Small sacs where gas exchange takes place.

What do thin-walled blood vessels do in the alveoli?

Deliver oxygen and carbon dioxide to alveoli for exchange.

Where are chemoreceptors located, and what do they detect?

Located in medulla, carotid bodies, and aorta; detect gas concentrations in blood.

Where are mechanoreceptors located?

Located in lungs and airway smooth muscle.

How do parasympathetic signals affect breathing and bronchial tubes?

Parasympathetic signals slow down breathing and narrow bronchial tubes, while widening vessels.