Opioids and CNS control of the gut.
D000818:Animals; D002490:Central Nervous System / Q000502:physiology*; D004068:Digestive System Physiological Phenomena; D004723:Endorphins / Q000502:physiology*; D005769:Gastrointestinal Motility; D009119:Muscle Contraction; D009130:Muscle, Smooth / Q000502:physiology; D051381:Rats; D011957:Receptors, Opioid / Q000502:physiology
D004723:Endorphins; D011957:Receptors, Opioid