Week 1 Developmental Psychology
Week 1 Developmental Psychology PSY-P 102
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This 2 page Class Notes was uploaded by Veronica Bone on Sunday February 15, 2015. The Class Notes belongs to PSY-P 102 at Indiana University taught by Irene Vlachos-Weber in Winter2015. Since its upload, it has received 182 views. For similar materials see Introductory Psychology 2 in Psychlogy at Indiana University.
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Date Created: 02/15/15
Week 1 Developmental Psychology Notes Prenatal Development a Conception sperm meets ovum i 1 ovummonth 1 Ovaries take turns 2 If you lose an ovary you don t lose ability to procreate ii Ovulation 14 days before next period ii Fertilization 1 Start with millions of sperm by the fallopian tubes there are 100 s 200 million sperm begin only 50 reach egg 2 Fertilized ovum zygote fallopian tube uterus a Dizygotic twins fraternal twins 2 eggs 2 sperms b Monozygotic twins identical twins 1 sperm and 1 egg that splits into two 3 lt50 zygote survive more females than males survive 0 Men create new sperm every 3 days so they can procreate all through life while females are born with all of their eggs and they only deteriate when they get older so a kid might have birth defects if the mom is older 0 Peak of fertility late teens early twenties o Vagina is acidic to fight off infection hostile vagina lose 14th of sperm from this 0 Women defense cells destroy some of them 0 12 go up the fallopian tube with the egg half of them get lost in the other 0 Sperm is viable for 48 hours b Genetics i Cells 46 chromosomes 23 pairs 1 each from mom dad ii Gametes sex cells sperm ovum 1 Contain only 23 because they combine to make cell with 46 chromosomes 2 22 autosomes 1sex chromosome a Get one from each parent b Mom XX dad XY i Dad determines the sex of the baby because he has both the X and the Y chromosome c Female is XX male is XY c Gestation i 38 weeks conception to birth 1 Health issues if stay too long placenta will start to deteriorate ii 3 periods 1 Germinal from conception to implantation 58 days a Blatocyst fluid inside b Blatocyst will differentiate into placenta and embryo Week 1 Developmental Psychology Notes i Life fluid which connects mom to embryo there are stem cells as well 2 Embryo from implantation to 8 weeks a Rapid cell differentiation b Placenta life support system i In nutrients oxygen immunities alcohol drugs tobacco 1 Be careful what you take in as a mom whatever you eat if you are addicted to drugs or alcohol so will your baby ii Out waste c End of 8 weeks i 1 12 eyes ears mouth limbs ii Heart beating iii Brain spinal cord developing 3 Fetus from 8 weeks to birth a Organs functional b Last 7 months refining growing brain cells i 250000 neuronsminute ii Earliest that a baby can be born and survive is 20 weeks lungs take one of the longest to develop so critical when born c Reacts to light amp sound i Can recognize parents voices at birth 0 By 5 months you can tell whether the kid is a boy or a girl before that the genitals to not exist Infant a Physical development i differential proportions 1 a baby s head is M of its whole body while as an adult your head is 18th ofyourbody ii reflexes automatic responses to an event at birth 1 for ex if it is really dark your pupil will get bigger to let in more light 2 We have some reflexes as an infant that don t carry on to adulthood a Rooting when cheek is touched a infant will turn to suck on object b Bibinski stroke a babies foot and their toes will curl in and then sprawl out
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