finals Flashcards
also known as conception, is the process by which sperm and ovum (sex cells) combine to create a single cell called zygote, which then duplicates itself again and again by cell division.
Fertilization
fertilized egg cell that results from the union of a female gamete (egg, or ovum) with a male gamete (sperm)
zygote
rupture of mature follicle in either ovary and expulsion of its ovum which occurs every month until menopause
Ovulation
also known as Fraternal Twins. Two separate eggs being fertilized by two different sperms
Dizygotic Twins
resulted from the cleaving of one fertilized egg and are generally genetically identical (identical twins)
Monozygotic Twins
genetic transmission of heritable characteristics from parents to offspring
Heredity
long, spiraling ladder whose steps are made of pairs of chemical units called bases (Adenine, Thymine, Cytosine, Guanine)
Deoxyribonucleic Acid
coils of DNA of smaller segments called genes
Chromosomes
cell division of non-sex cells
Mitosis
cell division of sex cells
Meiosis
mistake in copying genetic code which creates permanent alteration in genetic material
Mutation
not affiliated to sexual expression
Autosomes
23rd pair which indicates the baby’s sex (XX, female: XY, male)
Sex Chromosomes
produce alternative expressions of characteristics
Alleles
if two alleles are the same
Homozygous
if two alleles are different
Heterozygous
allele that is always expressed or shows up as a trait in that person
Dominant
usually doesn’t show unless paired with another recessive trait
Recessive
observable characteristics
Phenotype
underlying genetic makeup
Genotype
effects of similar environment conditions on genetically different individuals
Genotype-Environment Interaction
environment often reinforces genetic differences
Genotype-Environment Correlation
parents tend to provide environment that encourages the development of that trait
Passive Correlations
children with differing genetic makeups evoke different reactions from others, other people react to the children’s genetic makeup
Reactive or Evocative
actively selects or create experiences consistent with their genetic tendencies
Active
tendency to seek out environments compatible with one’s genotype
Niche-Picking
result from the unique environment in which each child in a family grows up
Nonshared Environmental Effects
inability to conceive a child
Infertility
eggs and sperm are combined in a laboratory dish
In Vitro Fertilization
high frequency sound waves are directed into the pregnant woman’s abdomen. 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
A period between conception and birth. Between 37 and 41 weeks
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
Proximodistal
From fertilization to about 2 weeks of gestational age. Zygote enters into cell division (mitosis) while making its way to the fallopian tube
Germinal Stage
fluid-filled sphere which floats freely in the uterus until 6th day after fertilization then it implants itself in the uterine wall
Blastocyst
outer layer of cells that later provides nutrition and support for the embryo
Trophoblast
outer layer (becomes outer layers of skin, nails, hair, teeth, sensory organs, and the nervous system)
Ectoderm
inner layer (becomes digestive system)
Endoderm
middle layer (becomes inner layers of skin, muscles, skeleton, and excretory and circulatory systems)
Mesoderm
encloses the developing embryo, protecting it and giving it a room and grow
Amniotic Sacs
allows oxygen, nourishment, and wastes to pass between mother and embryo
Placenta
connects the embryo to the placenta
Umbilical Cord
From 2 to 8 weeks (First 2 monts)
Major body systems (respiratory, digestive, and nervous system) develop known as Organogenesis
Embryonic Period
most vulnerable to destructive influences
Critical Period
expulsion from the uterus of an embryo that is unable to survive outside the womb
Spontaneous Abortion (Miscarriage)
miscarriage occurred after 20 weeks of gestation
Stillbirth
From 8 weeks to Birth. Appearance of the first bone cells. Final stage of gestation
Fetal Period
environmental agent that can interfere with normal prenatal development
Teratogen
field of study that investigates the causes of birth defects
Teratology
sleep disturbance, tremors, difficulty regulating the body, irritability, crying and etc.
Neonate Abstinence Syndrome
characterized by a combination of retarded growth, face and body malformations, and disorders of the central nervous system
Fetal Alcohol Syndrome
process of giving birth
Labor
series of uterine, cervical, and other changes which begins 2 weeks before the delivery
Parturition
false contractions
Braxton-Hicks Contractions
profession that provides health care to women during pregnancy, birth, and even postpartum period
Midwifery
caregiver who provides continuous physical, emotional, and educational support for the mother before, during, and after childbirth
Doula
used to track the fetus’ heartbeat during labor and delivery and to indicate how the fetal heart is responding to the stress of uterine contractions
Electronic Fetal Monitoring