How is the birth of human babies physically possible?
A) The birth canal of the human female is large.
B) The pelvis of the human female is long.
C) The skull of the human infant is pliable.
D) The birth canal of the human female is large and the skull of the human infant is pliable.

Question

Quizplus · Accepted Answer

The birth canal of the human female is indeed large, especially compared to other primates, allowing for the passage of a larger-headed infant. However, if the infant's skull was not pliable, it would still be too large to pass through the pelvic opening. Fortunately, the infant's skull is not fully fused, and instead has several soft spots (fontanelles) that allow it to compress and reshape as it moves through the birth canal. This process is known as molding, and it helps ensure that the infant can fit through the pelvic opening during birth.

How Is the Birth of Human Babies Physically Possible