Examlex
The second stage of sleep is characterized by ____________________, which are sudden, sharp intermittent waveforms indicating that one's brain is still sensitive to events occurring in the external world.
Replacement Request
A formal or informal request to replace something that is lost, damaged, unsatisfactory, or no longer meets the needs.
External Respiration
The exchange of gases (oxygen and carbon dioxide) between the atmosphere and the blood through the lung alveoli.
Pulmonary Ventilation
The process of moving air in and out of the lungs to facilitate gas exchange with the internal environment, mainly by bringing in oxygen and flushing out carbon dioxide.
Internal Respiration
The exchange of gases (oxygen and carbon dioxide) between the blood and the body cells, facilitating cellular metabolism.
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