Psychology Module 2 Exam
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1. What are the three periods of prenatal development? - ANSWER ✔
germinal, embryonic, and fetal
2. When does the germinal period take place? - ANSWER ✔
during the first two weeks after conception, when the zygote is created and
attaches to the uterine wall
3. When does the embryonic period occur? - ANSWER ✔
During the embryonic period (2 to 8 weeks after conception), layers of cells
are formed. These layers will develop into organs and support systems for
cells. For instance, the inner layer of cells develops into the respiratory and
digestive systems, while the outer layer becomes the nervous system and
sensory systems.
4. when does the fetal period take place? - ANSWER ✔
Finally, the fetal period begins two months after conception and lasts
approximately seven months. Major growth and development takes place
during this period.
,5. What happens in the first trimester? - ANSWER ✔
Grows up to 3 in.; Weighs about 1 oz. by the end; Begins to develop spinal
cord, nervous system, gastrointestinal system, heart, lungs; Heart beat
detectable at 8 weeks; Can move arms, legs, fingers, toes; Brain is forming
by 8 weeks; Can smile, frown, suck, swallow; Can move and respond to
touch by the second month; Can tell the gender around 12 weeks
6. What happens in the second trimester? - ANSWER ✔
Grows to about 14 in.; Weighs about 1 lb. by the end; Skin is protected by
vernix (milky substance) and lanugo (fine hairs); Heartbeat can be heard
with stethoscope; Eyes open by 24 weeks; Can suck thumb, has strong grip;
Has nails, hair, eyelashes, eyebrows; Can roll over; mother can feel
movement; Can feel pain
7. What happens in the third trimester? - ANSWER ✔
Grows up to 19 in.; Average weight 6-7 lb. at 38 weeks; Lanugo is nearly
gone; Age of viability 22-26 weeks; Usually assumes upside-down position;
Bones in skull are soft and pliable; Body fat is continually being added;
Mother feels less movement at the end; Very responsive to stimulation such
as touch, sound, light
8. What are teratogens? - ANSWER ✔
environmental agents can interfere with natural growth and produce a birth
defect
9. What are the 3 variables important regarding teratogens? - ANSWER ✔
baby's gestational age, amount of the teratogen, susceptibility
10.consequence of nicotine- ANSWER ✔
Miscarriage, preterm birth, low birth weight, learning difficulties, SIDS
11.consequence of alcohol- ANSWER ✔
Fetal alcohol syndrome, cognitive and emotional problems
12.consequence of x-rays- ANSWER ✔
Gene mutation, possible deformity
13.consequence of herpes- ANSWER ✔
, Miscarriage, low birth weight, intellectual disability
14.consequence of toxoplasmosis- ANSWER ✔
Eye and brain damage
15.consequence of malnutrition- ANSWER ✔
Nervous system damage, respiratory illness, poor health
16.consequence of stress- ANSWER ✔
Miscarriage, prematurity, low birth weight, respiratory illness, birth defects
17.consequence of advanced maternal age- ANSWER ✔
Chromosomal defects, miscarriage, infertility
18.stage 1 of childbirth- ANSWER ✔
19.Stage I is early labor & active labor. As the longest stage, it begins at the
onset of true labor and ends when the cervix is completely dilated. Early
labor typically takes 8 to 12 hours itself, while active labor often takes 3 to 5
hours. Contractions in early labor often last for about 30 to 45 seconds, with
5 to 30 minutes of rest in between. Contractions start out mild and irregular,
but then progress. Sometimes a woman’s water breaks in this stage (this is
an amniotic sac rupture), and sometimes it does not. During active labor,
contractions last about 45 to 60 seconds with 3 to 5 minutes of rest in
between.
20.stage 2 of childbirth- ANSWER ✔
Stage II is delivery of the baby, and it begins after the cervix is dilated
completely (10 cm) and ends after the baby’s delivery. This stage may last
anywhere from 20 minutes to 2 hours. This is when a strong urge to push
occurs, accompanied by a strong sense of pressure at the rectum. The baby’s
head will eventually crown, or become visible. When this happens, it is
important to let the health care provider coach how and when to push.
21.stage 3 of childbirth- ANSWER ✔
Stage III is the delivery of the placenta (afterbirth), which typically takes 5
to 10 minutes. Contractions start up again in preparation for this. The
placenta begins to separate from the uterine wall so that it can be delivered.
, The mother may experience shaking and shivering after the placental
delivery, and this is normal.
22.types of drugs used during childbirth- ANSWER ✔
analgesics, anesthesia, and oxytocics; Analgesics relieve pain and include
narcotics, barbiturates, and tranquilizers. Anesthesia blocks the sensation of
pain in a certain area of the body. General anesthesia may also block
consciousness; although today, most normal deliveries trend away from
general anesthesia and instead use epidural anesthesia, which is a regional
block. Oxytocics are synthetic hormones that stimulate contractions for the
purpose of inducing labor.
23.postpartum period- ANSWER ✔
A final period of childbirth is the postpartum period, which is when the
mother's body heals and she emotionally adjusts to childbearing and
childrearing. It is generally said to last approximately 6 weeks, which is
when the body has completed biological adjustments to childbearing.
Biological adjustments include involution, which is when the uterus returns
to its normal size (dropping from 2 to 3 lb. post-delivery to 2 to 3 ounces).
Breastfeeding actually helps contract the uterus at a faster rate. Numerous
psychological adjustments also occur, such as coordinating the parents' and
baby's schedules, readjusting social relationships, and bonding with the
baby.
24.A sex-linked single-gene disorder is usually transmitted from: - ANSWER
✔ mother to son.
25.Phillip asks, "How many chromosomes do humans have?" Which reply is
correct? - ANSWER ✔ 46
26.During implantation, the blastocyst embeds itself in the uterine wall. -
ANSWER ✔ True
27.Sperm can live for several days inside a woman's reproductive tract. -
ANSWER ✔ True
28.Based on the text discussion, which statement is NOT true about infertility?
- ANSWER ✔ This condition is usually caused by "female" physical
problems.