Consumer and patient health information section is part of the
a. national institutes of health
b. center for diseases control and prevention
c. national medical library
d. medical library association

By 2 weeks after fertilization the morula has implanted into the uterine lining and transforms into a(n) . this time is when the , or the organ that will provide nourishment to the fetus by exchanging nutrients and waste products, begins to develop.