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According to William Safire, "helpfulism" is basically protectionism.
Chemoreceptors
Sensory cells or organs specialized in detecting chemical stimuli in the environment, involved in taste and smell in animals.
Arterial Concentration
The concentration of gases, nutrients, or other substances within the arterial blood, critical for assessing the health and function of the circulatory system.
Medulla
An inner region or core in various organs or cells, often referring specifically to the innermost part of the kidney or the lower part of the brain stem.
Respiratory Centers
Centers in the medulla and pons that regulate breathing.
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