Molecules of caffeine (left) and adenosine (right),computer artwork. Caffeine acts in the body as a central nervous system stimulant and is the world's most widely consumed psychoactive drug. Adenosine is an endogenous substance (produced naturally inside the body) and acts as a central nervous system inhibitor (depressant),with essentially opposite effects to caffeine | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / SCI-COMM STUDIOS |
Bildgröße: | 3475 px × 2539 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |