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APSM Biology 3.6

APSM CA Biology 3.6 Human Development

TermDefinition
Afterbirth contains the amnion and placenta
Amnion sac where the embryo develops, contains amniotic fluid
Blastocyst Early stage of human development after the zygote
Cervix Opening of the uterus
Chorion outermost fetal membrane around the embryo
Ectoderm embryonic layer that becomes the skin & nerve cells
Embryology the study of pre-birth human growth & development
Endoderm embryonic layer that becomes the lining of the digestive tract
Fraternal Twins twins that come from two different eggs
Gastrulation stage in early embryonic development that leads to the formation of three primary tissue layers
Gestation the period from conception to birth, 38-40 weeks in humans
Identical Twins twins that develop from the same egg
Labor process of birth
Mesoderm embryonic layer that becomes most of the other tissues of a baby
Navel depression in center of a person’s belly caused by detachment of the umbilical cord
Neural Tube fold on embryo that develops into the spinal cord
Neurulation process in embryonic development in which neural tissue is transformed from a flat plate into the neural tube, which develops into the CNS
Oxytocin hormone that stimulates uterine muscles to contract during labor
Placenta sac of blood vessels that connects a mother to an unborn child
Umbilical cord cord consisting of three blood vessels and supporting tissue, connecting placenta to an unborn baby
Created by: samundoacademy
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