Chapter 3 read notes

Chapter 3 read notes - Developmental Psychology Chapter 3...

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Developmental Psychology Chapter 3 Read Notes About 266 days after conception, a protein called corticotrophin-releasing hormone (CRH) triggers the release of various hormones that the process that leads to birth begins Oxytocin- released by the mother’s pituitary gland, high concentrations cause contractions Braxton Hicks contractions- when the uterus contracts occasionally in order to ready itself for the eventual delivery First stage of labor- uterine contractions initially occur around every 8 to 10 minutes, the contractions occur more frequently and last longer as labor proceeds, during the final part of the first stage the contractions increase to great intensity Transition- when the contractions increase to their greatest intensity Second stage of labor- lasts around 90 minutes, the baby’s head emerges from the mother with each contraction increasing the size of the vaginal opening Third stage of labor- the child’s umbilical cord and the placenta are expelled from the mother, quickest and easiest stage The exact moment of birth occurs when the fetus passes through the vagina to emerge fully from it’s mother’s body Apgar test- appearance (color), pulse (heart rate), grimace (reflex irritability), activity (muscle tone, and respiration (respiratory effect) Low apgar scores may indicate problems or birth defects that were already present in the fetus The most profound difficulties in birth is a temporary deprivation of oxygen. At various junctures during labor, the fetus may not get sufficient oxygen Vernix- smoothes the passage through the birth canal, it is no longer needed once the child is born and is quickly cleaned away Lanugo- fine, dark fuzz that covers the newborn baby Bonding was based in part on research conducted on nonhuman species such as ducklings According to the concept of bonding applied to humans, a critical period begins just after birth and lasts only a few hours When developmental researchers carefully reviewed the research literature they found little support for the existence of a critical period for bonding at birth
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This note was uploaded on 10/24/2011 for the course BIOLOGY 1402 taught by Professor Held during the Fall '11 term at Texas Tech.

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Chapter 3 read notes - Developmental Psychology Chapter 3...

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