Internal anatomy of an elephant Montessori 3 Part Cards! This learning resource contains three part cards for the internal anatomy of an elephant. Internal organs included in this booklet: elephant, brain, spinal cord, heart, spleen, respiratory system, nasal cavity, trachea, lungs, digestive system, oral cavity, esophagus, stomach, liver, small intestine, large intestine, kidneys, bladder, and rectum. If you would like to expand on this topic, check out my internal parts of an elephant booklet