Sometimes, a small sample of tissue may be taken with small tools inserted through the vagina during a transvaginal ultrasound. In all three types of pelvic ultrasound, the transducer sends the reflected sound waves to a computer, which makes them into a picture that is shown on a video screen.
Before birth, a fetus starts with around 2 million eggs in each ovary. Those eggs are trimmed down over time, and a girl is born with around 300,000 eggs in each ovary. She â¦normally releases 1 egg a month during her fertile years.
A: Women are born with approximately one- to two-million oocytes (eggs). By the time a woman reaches puberty, average age being about 12 years, she has roughly 300,000 to 400,000 eggs remaining. On average, 1,000 eggs are lost each month during her reproductive years, from the onset of puberty to menopause.