ID 276026131 © Designua | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
brain limbic system cerebral cortex suprachiasmatic nucleus optic chiasm hypothalamus pineal gland regulation circadian rhythms sleepwake cycle melatonin human neocortex gray matter cerebrum scn biological clock cross pathway homeostasis pituitary thalamus epiphysis endocrine chronobiology sleep disorders anatomy vector eye sunlight production hormones wakefulness light sensitivity anatomical poster hormone flat neuroendocrine glandular secretion serotonin synthesis timekeeping neurotransmitter photoreceptor cells nuclei entrainment jet lag disorder retina nerve insomnia clinical pharmacology physiological function located structure nervous regulate secrete hormonal gland sleep-wake brain anatomy