Progress Monitoring Measures. â¢designed to assess the same core features as the. research and annual self-assessment measures. â¢used by school teams (typically with the support of. their coach) on a frequent basis (e.g. monthly, every. two months, or quarterly) to guide action planning. during the implementation process.
The basic function of alveoli is exchange of gases. Its structure is the site where the gaseous exchange during respiration takes place. These structures are surrounded by capillaries carrying blood. The exchange of carbon dioxide in the blood from these capillaries occurs through the walls of alveolus.
Majority of alveolar surface is thin, pancake like cells, called type one cells, allowing easy gas molecule movement. Type two cells produce surfacant and aid in cellular repair. Surfacant is secreted to prevent the delicate alveoli from being damaged by movement of sit into and out of them.