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.
Facial hair in males does not always appear in a specific order during puberty and varies among some individuals but may follow this process: 1  The first facial hair to appear tends to grow at the corners of the upper lip (age 11â15). 2  It then spreads to form a moustache over the entire upper lip (age 16â17).