The abdominal cardiac nerves and cardioregulation in Limulus polyphemus.
D000005:Abdomen; D000818:Animals; D003445:Crustacea / Q000502:physiology*; D004558:Electric Stimulation; D006321:Heart / Q000294:innervation*; D006339:Heart Rate; D009119:Muscle Contraction; D013696:Temperature; D013997:Time Factors