Human Development Crossword

the fusion of a sperm and egg cell is called
a fertilized egg
early stage of a multicellular organism involving rapid growth/cell division and specialization
from fertilization until week 9
the embryo undergoes rapid mitosis as it travels down the fallopian tubes toward the uterus
hollow ball of cells
early development event in which the 3 cell layers of the embryo are produced
first step in the development of the nervous system
fluid-filled sac that surrounds the embryo (inner sac/fetal side)
outside sac that surrounds the amnion(outer sac/uterine side)
the chorionic villi along with the endometrium form the
connection from embryo to placenta (2 arteries, 1 vein)
AKA childbirth;the culmination of pregnancy
the series of events that expel the infant from the uterus
result of 2 eggs released at the same time & both atre fertilized
when a single zygote splits and produces identical embryos
what takes place in the fallopian tubes?
having a single set of unpaired chromosomes
containing two complete sets of chromosomes, one from each parent
the period of fertilization until the birth of the baby is called