Explaining Biology on Instagram: "This tiny contraceptive implant is one of the most effective long-acting birth control methods available today. About the size of a matchstick, it is gently inserted just under the skin of the upper arm by a trained healthcare professional using a quick, minimally invasive procedure. Once in place, the implant continuously releases a low, steady dose of a synthetic hormone called progestin. This hormone works in three powerful ways: it stops the ovaries from rel