This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Congenital malformations, Subject name: Gynaecology & Obstetrics
Which of the following pubeal events in girls is not estrogen dependant 
Select and explain. 
A. Menstruation, B. Vaginal cornification, C. Height spu, D. Hair growth
D: Hair growth
Answer: D: Hair growth 
Explanation: Functions of estrogen Estrogen changes the vaginal epithelium from cuboidal to stratified type,which is more resistant to trauma and infection Marked proliferation of endometrial stroma and greatly increases the development of the endometrial glands - Menstruation Development of the stromal tissue of breast, growth of an extensive ductile system and deposition of fat Increase in osteoblastic activity and growth rate becomes rapid for several years Estrogens do not greatly affect hair distribution and growth. However hair develops in the pubic region and axilla after pubey. Androgens produced by the adrenal glands are responsible for this TEXTBOOK OF MEDICAL PHYSIOLOGY,GUYTON,Pg no:905,906,8th edition