Question

An advertising campaign urges pregnant women to get good prenatal care by saying that all of the structures that we recognize as human (including arms, legs, eyes, internal organs, and a beating heart) have already developed early in pregnancy. Having studied prenatal development, you know that the most accurate statement is that these structures are present, at least in rudimentary form, by:

a) the end of the 2nd month of pregnancy
b) the end of the 2nd week of pregnancy
c) the end of the 4th week of pregnancy
d) the end of the 4th month of pregnancy

Answer 1

Structures like arms, legs, eyes, internal organs, and a beating heart are present in rudimentary form by the end of the 4th week of pregnancy. By the end of 8 weeks, the body is essentially formed.

Step-by-step explanation:

The most accurate statement is that these structures are present, at least in rudimentary form, by the end of the 4th week of pregnancy. By this point, the limb buds, eyes, the heart, and liver have been formed. By the end of 8 weeks, the body is essentially formed, with the individual being about five centimeters (two inches) in length.