Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
Did you know?
According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).
Did you know?
Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
Did you know?
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
Checking teeth and other physical examinations are an important part of horse care.
Comparing fossil patterns of the Hadar Baby, the Taung Child, and Au. Robustus.
(a) The Dmanisi cranium (right) shows similarities to early African H. erectus including the Narioko
Baby's eyes are developed in 6th week of pregnancy