Internal

• Ployric Stomach: A small, sac-like organ that stores bile and is located in the upper right quadrant of the stomach. (digestion)
• Cardiac Stomach: A small, sac-like organ that stores and secretes bile. (Digestion)
• Digestive Glands: Secrete enzymes and other substances necessary for digestion. (secretion)
• Heart: Functions like a pump, circulating blood and nutrients throughout the crayfish's body. (Circulation)
• Gills: Used for respiration, they extract oxygen from water and expel carbon dioxide. (Respiration)
• 1. Mandibular Muscles: Aid in the movement of the mandibles for feeding and other activities. (Movement)
• Green Glands: Act as excretory organs, removing waste and maintaining the crayfish's internal balance by regulating salt and water levels. (Excretion)
• 1. Gastric Mill: A specialized part of the digestive system that grinds food into smaller particles for further digestion.