Chapter 5: Factors Affecting Growth & Development Flashcards
(66 cards)
slide 2
Define teratogen
environmental agent that can cause birth defect or kill a fetus
Why is the first 2-8 weeks a sensitive period ?
because there is no placenta and everything is going into the baby
What are external factors that affect the fetus ?
What an expectant mother eats, breathes, drinks, or smokes, etc.
Fetus is protected by placenta, but not impervious to outside environment. T/f
T
Sensitive periods is when…
an organism is most sensitive to certain
environmental influences, such as teratogenic agent
slide 4
________________ (two words) interfere with basic biochemical processes
Teratogenic effects
The susceptibility of teratogenic effects varies with __________________. (two words)
developmental stage
Teratogienic specificity (ask J)
Teratogenic affects differently (Ask J)
The amount of risk of teratogenic effects depends on the _____________ and __________ received to the teratogens.
concentration; exposure
Do teratogens affect the mother?
No it is mainly on the fetus
There can be temporary or delayed effects from teratogens. T/F
True
What are the internal (maternal) factors?
Maternal age
Nutrition
Genetic-related abnormalities
Fetal position
Maternal stress
Describe the fetal position (internal factor).
head first, head down
40 weeks
breach baby: feet first, in the US a c-section will be done.
the fetal position can depend on the place you are living.
uterine band can be a teratogen, can cause amputation or death to baby when they get caught up in it. Uterine band can’t be prevented.
Describe maternal stress (internal factor)
dad’s usually primary stress whether they are good or bad
domestic violence
overattentiveness can be smuthering
finances
maternity leave, apply for disability
females with body dismorphia
breastfeeding
episiotomy
a cut to increase the tear of the cervix,
not recommended
maternity leave
vaginal: 8 weeks
c-section: 11 weeks
maternal age (internal factor)
Old Mothers with an age of 40-45
D: have higher risk of having a baby with down syndrome.
D: Likely to have a premature risk.
Higher risk of miscarriage.
A: may be more educated, likely to take care of themselves, have more money to provide for baby, financially stable. Likely to have a stable relationship.
Younger mothers.
D: Higher risk of preterm and miscarriage. Pelvis may not be fully developed.
D: Likely to get fistulas.
D: Less educated, not financially stable
D: stress, social stigma
D: less likely to go to doctor for prenatal care
Each year in the United States, approximately 3 to 5% of births (approximately 125,000 infants) are born with a genetic abnormality
Phenlyketinuria (PKU) (Genetic Abnormalities)
Phenlyketinuria (PKU)
- dad and mom both have genes
- can’t synthesize phenylalanine
- special diet entire life
Down Syndrome (genetic abnormalities)
Downs Syndrome
- extra chromosome 21
- thicker neck, flat feet,
higher risk of obesity, flattened nasal bridge, possible heart problems, lower life expectancy
- high or low functioning
- higher risk of sexually and/or physically abused.
- measure bridge of nose, and the neck
- amniocentesis
Sickle-Cell Anemia (genetic abnormalities)
immune to malaria
can’t be cured
organs can be damaged to lack of oxygen