Internal Organs
QuarterlyAn internal organ is an organ of an animal that is inside the body, beneath the skin. The stomach, heart, lungs, and liver are internal organs and are protected by layers of skin, fat and bones.
An internal organ is an organ of an animal that is inside the body, beneath the skin. The stomach, heart, lungs, and liver are internal organs and are protected by layers of skin, fat and bones.
