Did you know that stomach muscles are involuntary muscles? This means they work without you having to think about them. Learn more about the appearance and function of this body part in Stomach, an All About Your... book.
Jane P. Gardner (North Chelmsford, MA) is a freelance writer and editor with more than six years of experience writing for school-aged children. She has a master's degree in geology from Virginia Tech and a master's degree in education from the University of Massachusetts-Boston. Ms. Gardner has also worked as a classroom teacher, predominantly with middle-school and high-school students. She left the classroom to enter the world of educational publishing. As an educational writer and editor, Ms. Gardner has worked on projects for students in kindergarten through the college level.