Melatonin is a hormone secreted by the pineal gland (red) at night. It regulates the body's daily biological rhythm depending on luminosity as light regulates its secretion via a path involving the suprachiasmatic nucleus (green), the paraventricular nucleus (yellow) and the preganglionic sympathetic neurons. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / FERNANDO DA CUNHA |
Bildgröße: | 5100 px × 5100 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: | - |