Download neonate germinal stage blastocyst embryonic disk trophoblast

neonate
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umbilical cord
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germinal stage
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placenta
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blastocyst
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embryonic stage
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embryonic disk
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cephalocaudal
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trophoblast
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proximodistal
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A tube that connects the fetus to the placenta.
A newborn baby.
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An organ connected to the uterine wall and to
the fetus by the umbilical cord. The placenta
serves as a filter between mother and fetus for
the exchange of nutrients and wastes.
The period of development between conception
and the implantation of the embryo.
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The stage of prenatal development that lasts
from implantation through the eighth week of
pregnancy; it is characterized by the
development of the major organ systems.
A stage within the germinal period of prenatal
development in which the zygote has the form
of a sphere of cells surrounding a cavity of fluid.
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From head to tail.
The platelike inner part of the blastocyst that
differentiates into the ectoderm, mesoderm, and
endoderm of the embryo.
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From the inner part (or axis) of the body
outward.
The outer part of the blastocyst from which the
amniotic sac, placenta, and umbilical cord
develop.
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ectoderm
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amniotic sac
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neural tube
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amniotic fluid
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endoderm
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fetal stage
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mesoderm
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stillbirth
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androgens
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teratogens
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The sac containing the fetus.
The outermost cell layer of the newly formed
embryo from which the skin and nervous
system develop.
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Fluid within the amniotic sac that suspends and
protects the fetus.
A structure that forms in the ectoderm during
the embryonic stage, from which the nervous
system develops.
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The stage of development that lasts from the
beginning of the ninth week of pregnancy
through birth; it is characterized by gains in size
and weight and by maturation of the organ
systems.
The inner layer of the embryo from which the
lungs and digestive system develop.
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The delivery of a dead fetus.
The central layer of the embryo from which the
bones and muscles develop.
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Environmental influences or agents that can
damage the embryo or fetus.
Male sex hormones.
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critical period
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toxemia
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syphilis
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premature
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congenital
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Rh incompatibility
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HIV/AIDS
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thalidomide
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rubella
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progestin
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A life-threatening disease that can afflict
pregnant women; it is characterized by high
blood pressure.
In this usage, a period during which an embryo
or fetus is particularly vulnerable to a certain
teratogen.
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Born before the full term of gestation. Also
referred to as preterm.
A sexually transmitted infection that, in
advanced stages, can attack major organ
systems.
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A condition in which antibodies produced by
the mother are transmitted to the child, possibly
causing brain damage or death.
Present at birth; resulting from the prenatal
environment.
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A sedative used in the 1960s that has been
linked to birth defects, especially deformed or
absent limbs.
HIV stands for human immunodeficiency virus,
which cripples the body’s immune system. AIDS
stands for acquired immunodeficiency syndrome, a
condition in which the immune system is
weakened and the body becomes vulnerable to
a variety of fatal illnesses.
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A hormone used to maintain pregnancy that
can cause masculinization of the fetus.
A viral infection that can cause retardation and
heart disease in the embryo. Also called German
measles.
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DES
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fetal alcohol syndrome (FAS)
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Diethylstilbestrol, an estrogen that has been
linked to cancer in the reproductive organs of
children of women who used the hormone
when pregnant.
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A cluster of symptoms shown by children of
women who drank heavily during pregnancy,
including characteristic facial features and
mental retardation.
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