👉 The term "entocyst" is a biological term that refers to a small, round-shaped sac or organ within an organism. It is often used in medical contexts to describe the structure of certain organs in the body. For example: - In a human, an entocyst could be a kidney, where urine is filtered and eliminated. - In a fish, an entocyst might be a heart, where blood circulates throughout the fish. - In a mammal, such as a