Ch 3 part 1 prenatal development PSYC 2076

Ch 3 part 1 prenatal development PSYC 2076 -...

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Prenatal Development Child Psychology Summer 2011
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Prenatal Development The Course of Prenatal Development Prenatal development begins with fertilization, or at  conception . Ends with birth. Lasts between 266 and 280 days (from 38 to 40 weeks). Divided into three periods: Germinal Embryonic Fetal
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Prenatal Development The Course of Prenatal Development The Germinal Period First two  weeks   weeks after conception. It includes the creation of the fertilized egg (zygote), cell  division, and the attachment of the zygote to the uterine  wall (implantation)
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The Course of Prenatal Development Significant Developments in the Germinal Period
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Prenatal Development The Course of Prenatal Development The Embryonic Period Occurs from 2 to 8 weeks after conception. Support systems for cells form and  organs  appear. The blastocyst attaches to the uterine wall.  The mass of cells is now called an __embryo_ , and  three layers of cells form.  Endoderm  the internal body parts, organs; these cells  are the beginning of our systems Mesoderm  middle layer that surround the internal 
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Prenatal Development The Course of Prenatal Development The Embryonic Period  (continued) Life-support systems develop rapidly: __ Amnion _ : a bag or envelope containing a clear fluid in  which the developing embryo floats. Umbilical cord : contains two arteries and one vein and  connects the baby to the  __placenta_ . Placenta : A disk-shaped group of tissues in which small  blood vessels from the mother and the offspring intertwine  but do not join.
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The Course of Prenatal Development The Placenta and the Umbilical Cord
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Prenatal Development The Course of Prenatal Development
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This note was uploaded on 10/11/2011 for the course PSYC, PSYC 2076, 2060 taught by Professor Briganti,gustan,perlis,namikas,wheeler during the Spring '10 term at LSU.

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Ch 3 part 1 prenatal development PSYC 2076 -...

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