How would you define human anatomy? why is human anatomy important to art?

Human Anatomy is a study of the human body as a structure. Human anatomy is essential to art because it reflects the movement of the body in a true form. It is significant for an artist to study human anatomy because it helps in understanding the muscular and skeleton surface of the human body.

it would usually depend on the genre that they would provide

well seeing i am an artist and i actually did a self portrait; i will describe how i painted it.   i used acrylic on a stretch canvas about 4 feet wide by 6 feet tall. i painted myself smiling in a soft pink long dress, white tile floor sitting on a white couch with a table behind and a vase of gorgeous flowers.   i also had a round white hat with a soft pink ribbon through it laying on the floor and on the table behind me was a lit candle. i kept it simple but soft and romantic.