List of organs of the human body. This article contains a list of organs of the human body. There are approximately 79 organs, though there is no standard definition of what constitutes an organ and some tissue groups' status as one is debated. Contents.
Menarche is a normal process of maturation in girls along with the other changes that happen to a girlâs body during puberty. The timing of menarche is important. If a young girl has her first period before the age of 8 she likely has a condition known as precocious puberty.
Womens Health Â» M Â» Menarche. The average age of menarche, or first menstruation, in the United States is 12.88 years for Caucasian girls and 12.16 years for African American girls. A popular misconception is that menarche marks the beginning of puberty; in reality, menarche occurs later in puberty.