According to Scitable, a human fetus briefly has a tail, but as Wikipedia explains, it doesn’t have gills during any stage of development. The pharyngeal arches, which are colloquially referred to as gill slits, have no relation to functional gills found in fish.Continue Reading
During human fetus development, six pharyngeal arches develop, each with its own artery, nerve and skeletal tissue. However, the fifth arch only exists for a short period, Wikipedia further explains.
Scitable notes that the fetal tail disappears before the baby is born, similar to the fifth pharyngeal arch. However, if the Wnt-3a gene regulation is impaired, there is a very slight chance for a baby to have an actual tail after the birth, according to Scitable.Learn more about Human Anatomy
Atria and ventricles differ in size, location and method of operation, according to Wikipedia. These differences determine the thickness of walls and the type of blood vessels connecting to each type of chamber.Full Answer >
Anatomy is the study of form, while physiology is the study of function, according to Wikipedia. Anatomy is the scientific study of the structure of organisms including their systems, organs and tissues. It details the appearance and position of various parts, their material compositions and their locations and relationships with other parts. Physiology deals respectively with the functions of those anatomical parts and the chemical processes involved.Full Answer >
There is no exact number of babies that one woman is capable of producing in a lifetime. However, according to Today I Found Out, the record for the most babies born to one woman is 69.Full Answer >
There is no scientific need to circumcise male babies, and the procedure is becoming less common in the United States. Most Jewish and Islamic parents circumcise their sons for religious reasons.Full Answer >