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.
Menarche generally occurs when girls are in Stage 3 or 4 of their development, which usually takes place somewhere between age 9 and 15 years old. There has been some debate whether the age at menarche has changed over the last few decades.