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21 terms

study guide for exam 1 Lifespan development Ch.9

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Developmental Psychology
the study of how people change physically, mentally, and socially throughout their lifespan
Lifespan Development
is also known as developmental psychology
Gene
is the segment on the chromosone that contains the genetic instruction
Genotype
underlying genetic make-up
Phenotype
traits that are expressed
Allele
is the gene for eye color
Humunculism
the belief that each sperm cell contained a tiny individual who would grow when deposited in a woman's womb
Conception
fertilization; when a sperm unites with an egg to form a single cell
Zygote
is the first stage of conception
Endodermal
is inner layer of skin
Ectodermal
is the outer layer of skin
Mesodermal
forms into muscle
Name the 3 Periods of Prenatal Development
Zygote, Embryo, Fetus
What is another name for the Zygote period?
germinal
What is another name for the Embryo period?
embyonic
Implantation
the zygote settles into the lining of the uterus where it remains during pregnancy.
Amniotic Sac
waterfilled sac around the embryo and provides a cushion
Placenta
helps the embryo obtain nutrients, oxygen, and water
Umbilical Cord
connects to the fetus to the placenta
Teratogens
any agent that causes a birth defect.
Name some types of Teratogens
exposure to radiation, environmental chemicals, maternal inefectious diseases,drugs(street&prescriptions), caffiene, smoking, alcohol (FAS)