Human Anatomy HDRP have 27 prefabs. This package contains : 1_ Skeleton 2_ Muscle 3_ Digestive System 4_ Respiratory System 5_ Circulatory System 6_ Brain 7_Heart 8_Kidneys 9_Skin 10_ Dress Environment : Chair Books Table Locker Room Environment Textures Textures sizes varies from 1024 px (1K) to 4048 px (4k) sizes.