Here's an engaging activity for students to learn and identify the different types of human body cells. The cells included are skeletal, smooth muscle, melanocyte, epithelial, white blood cell, nerve cell, ovum, endothelial, red blood cell, osteocyte, fat cell, spermatozoa, cardiac muscle, and platelets. There are 16 questions, and the format includes Google Sheets and a printable PDF version. The Google Sheets version is self-grading; a mystery picture is revealed as students answer correctly. An answer key is provided.