Autism mostly has to do with the brain.
Autism is a neurological difference so it is located in the brain/mind. Autism is a whole body condition due to the impact on senses, it can also impact on the health of the gut and digestive system.
Autism isn't located in the brain, autism is a type of brain. Autism is a neurological variation, we don't say that autism is in the brain in the same way that we don't say that African-American is in the skin.
It is an organ. The heart belongs to cardio-vasculary organ system.
There are many organ systems located in the body: respiratory, cardiovascular, lymphatic, musculoskeletal and many more.
The skin is thelargest organ and is outside of and therefore not protected by the skeletal system.
It is an organ of your nervous system and it helps you think which is located in the skull.
YES it is an organ system?
The uterus or womb, is a hollow muscular organ of the female reproductive system. It is located between the bladder and the rectum, in the pelvic area.
Skin is an organ, not an organ system. It is part of the integumentary system.
Organ System
organelle --> cell --> tissue --> organ --> organ system the endocrine system is an organ system made of various organs
Presumably you speak of bone marrow, located within mostbones of the skeletal system