Also, Doppler can detect abnormal blood flow within the heart, which can indicate a problem with one or more of the heart's four valves. Color Doppler. Color Doppler is an enhanced form of Doppler echocardiography. With color Doppler, different colors are used to designate the direction of blood flow.
(I got armpit hair around 11 1/2 but everyone is different) From around age 13-16 but it can still happen earlier or later (maybe even 12 and 19) got mine just before i turned 14. Brent Lyday.
Puberty and Body Hair Development Q: When does an average male face start having hair? When does pubic hair start to grow and armpit hair? What age? A: Unfortunately there is no predefined schedule for the development of facial hair, pubic hair, armpit hair, and other body hair. These are all determined by your nutritional health and hormone levels, as well as genetics and the way that these factors affect your passage into puberty.