Developmental Psychology - Prenatal Part 3
This deck covers key concepts in prenatal development, including diagnostic techniques, stages of development, and early signs of pregnancy.
– high frequency sound waves are directed into the pregnant woman’s abdomen
No risk to the woman or fetus
Detect abnormalities, no. of fetuses, and sex
Ultrasound Sonography
Key Terms
– high frequency sound waves are directed into the pregnant woman’s abdomen
No risk to the woman or fetus
Detect abnormalities, no. of fetuses, and sex
Ultrasound Sonography
uses powerful magnet and radio images to generate detailed images of the body’s organs and structures
Fetal MRI
– small sample of placenta is removed
Small risk of limb deformity
Chorionic Villus Sampling
– sample of amniotic fluid is withdrawn and tested for chromosomal and metabolic disorders
Amniocentesis
– identifies pregnancies that have an elevated risk for birth defects
Maternal Blood Screening
period between conception and birth
Between 37 and 41 weeks
o Gestation
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| Term | Definition |
|---|---|
– high frequency sound waves are directed into the pregnant woman’s abdomen |
|
uses powerful magnet and radio images to generate detailed images of the body’s organs and structures | Fetal MRI |
– small sample of placenta is removed |
|
– sample of amniotic fluid is withdrawn and tested for chromosomal and metabolic disorders | Amniocentesis |
– identifies pregnancies that have an elevated risk for birth defects | Maternal Blood Screening |
period between conception and birth | o Gestation |
dated from the first day of an expectant mother’s last menstrual cycle | Gestational Age |
development proceeds from head to the lower extremities | Cephalocaudal Principle |
development proceeds from the center to outer parts of the body | o Proximodistal |
Tender, Swollen breasts or nipples | Early Signs and Symptoms of Pregnancy |
o From fertilization to about 2 weeks of gestational age | Germinal Stage |
– specialization of the cells to perform various tasks | o Differentiation |
fluid-filled sphere which floats freely in the uterus until 6th day after fertilization then it implants itself in the uterine wall | o Blastocyst |
– outer layer of cells that later provides nutrition and support for the embryo | o Trophoblast |
outer layer (becomes outer layers of skin, nails, hair, teeth, sensory organs, and the nervous system) | o Ectoderm |
outer layer (becomes outer layers of skin, nails, hair, teeth, sensory organs, and the nervous system) | o Ectoderm |
inner layer (becomes digestive system) | o Endoderm |
– middle layer (becomes inner layers of skin, muscles, skeleton, and excretory and circulatory systems | o Mesoderm |
encloses the developing embryo, protecting it and giving it a room and grow | o Amniotic Sacs – |
allows oxygen, nourishment, and wastes to pass between mother and embryo | o Placenta |
– connects the embryo to the placenta | o Umbilical Cord |
o From 2 to 8 weeks (First 2 months) | Embryonic Period |
o Major body systems (respiratory, digestive, and nervous system) develop known as | Organogenesis |
most vulnerable to destructive influences | o Critical Period |
– expulsion from the uterus of an embryo that is unable to survive outside the womb | o Spontaneous Abortion (Miscarriage) |