infchi psych - chapter 2 notes

infchi psych - chapter 2 notes - Chapter 2 Notes Prenatal...

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Chapter 2 Notes Prenatal Development and the Newborn Period Prenatal Development Epigenesis – the emergence of new structures and functions in the course of development Embryology – the scientific study of prenatal development Conception Gametes (germ cells) – reproductive cells—egg and sperm—that contain only half (23 chromosomes) the genetic material of all the other cells in the body Conception – the union of an egg from the mother and a sperm from the father Zygote – a fertilized egg cell Developmental Processes Embryo – the name given to the developing organism from the 3 rd to 8 th week of prenatal development Fetus – the name given to the developing organism from the 9 th week to birth Cell division – within 12 hours or so after fertilization, the zygote divides into two equal parts, each containing a full complement of genetic material (these two cells divide into four, those four into eight, etc.) Cell migration – the movement of newly formed cells from their point of origin in the embryo to somewhere else (occurs during the embryonic period) Cell differentiation – after several cell divisions, cells start to differentiate, or specialize, becoming different from one another in terms of both structure and function Phylogenic continuity
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This note was uploaded on 03/23/2011 for the course PSYCH 331 taught by Professor Carpenter during the Fall '07 term at Rutgers.

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infchi psych - chapter 2 notes - Chapter 2 Notes Prenatal...

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