Examlex
_____ is a hypothesized mechanism that serves to maintain body weight around a physiologically programmed level.
Spirometer
An instrument that measures the air taken in and expelled from the lungs.
Lungs
Pair of respiratory organs in the chest of vertebrates where blood is oxygenated.
Air
The unseen mixture of gases that envelops the Earth, primarily composed of oxygen and nitrogen.
P Wave
A component of an electrocardiogram (ECG) representing the depolarization of the atria preceding a heartbeat.
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