1.
A 35-year-old pregnant woman is most likely to undergo which type of test to detect prenatal chromosomal or genetic abnormalities?
Correct Answer
C. Amniocentesis
Explanation
Amniocentesis is a prenatal test that is typically performed on pregnant women around 15-20 weeks gestation to detect chromosomal or genetic abnormalities in the fetus. During the procedure, a small amount of amniotic fluid is extracted from the amniotic sac surrounding the fetus. This fluid contains fetal cells that can be analyzed for genetic abnormalities such as Down syndrome or neural tube defects. Amniocentesis is considered a more invasive test compared to ultrasound or alpha-fetoprotein assay, but it provides more accurate results. Pre-implantation testing, on the other hand, is performed before the embryo is implanted in the uterus and is not applicable to a 35-year-old pregnant woman.
2.
In order the correct sequence of prenatal stages of development is:
Correct Answer
C. Germinal; embryo; fetus
Explanation
The correct sequence of prenatal stages of development is germinal, embryo, and fetus. The germinal stage is the first stage, which lasts for about 2 weeks after conception. During this stage, the fertilized egg undergoes rapid cell division and attaches to the uterine wall. The embryo stage follows, lasting from the third week to the eighth week. During this stage, major organs and systems start to develop. Finally, the fetus stage begins at the ninth week and lasts until birth. During this stage, the organs continue to mature and the fetus grows in size.
3.
Monica is preparing for the birth of her first child. If all usually proceeds, she can expect that her labor will last about:
Correct Answer
D. 12 hours
Explanation
Monica, as a first-time mother, can expect her labor to last about 12 hours. This is a common duration for first-time mothers, as the body needs time to adjust and progress through the different stages of labor. It is important for Monica to be prepared for a potentially lengthy labor and have a support system in place to assist her throughout the process.
4.
Tetracycline and retinoic acid:
Correct Answer
A. Can be harmful to the human fetus.
Explanation
Tetracycline and retinoic acid can be harmful to the human fetus. This means that if pregnant women are exposed to these substances, it could have negative effects on the development and health of the fetus. It is important for pregnant women to avoid these substances to ensure the safety and well-being of their unborn child.
5.
The teratogen that, if not prevented by immunization, could cause deafness, blindness, and brain damage in the fetus is:
Correct Answer
A. Rubella (German measles)
Explanation
Rubella, also known as German measles, is a teratogen that can cause severe complications if not prevented by immunization during pregnancy. Rubella infection during early pregnancy can lead to congenital rubella syndrome, which can result in a range of birth defects including deafness, blindness, and brain damage in the fetus. Therefore, Rubella is the correct answer as it is the teratogen that poses this risk if not prevented by immunization.
6.
Kangaroo care refers to the following:
Correct Answer
C. A program of increased involvement by mothers of low-birthweight infants
Explanation
Kangaroo care refers to a program of increased involvement by mothers of low-birthweight infants. This term is used to describe a method of caring for premature or low-birthweight babies where the mother holds her baby skin-to-skin on her chest. This practice has been shown to have numerous benefits for both the baby and the mother, including improved bonding, regulation of body temperature, better breastfeeding outcomes, and enhanced development. It is a form of care that focuses on increasing the mother's involvement in the care of her fragile infant.
7.
Among the characteristics rated on the Apgar scale are:
Correct Answer
D. Muscle tone and color
Explanation
The Apgar scale is a quick assessment tool used to evaluate the overall health and well-being of a newborn immediately after birth. It consists of several characteristics that are rated on a scale of 0 to 2, with 2 being the best score. Muscle tone and color are two of the characteristics that are assessed. Muscle tone refers to the baby's level of muscle activity and how well they can move their limbs, while color refers to the baby's skin tone and whether it is pink or bluish. These two characteristics are important indicators of the baby's overall health and neurological development.
8.
A newborn is classified as low birthweight if they weighs less than:
Correct Answer
C. 5.5 lbs
Explanation
A newborn is classified as low birthweight if they weigh less than 5.5 lbs. This is because low birthweight is typically defined as a birthweight below 5.5 lbs or 2,500 grams. Babies with low birthweight may have a higher risk of health complications and may require special care and monitoring after birth.
9.
A critical problem for preterm babies is:
Correct Answer
D. Breathing difficulties
Explanation
Preterm babies often have underdeveloped lungs and respiratory systems, which can lead to breathing difficulties. Their lungs may not be able to provide enough oxygen to their bodies, causing them to struggle with breathing. This can result in conditions such as respiratory distress syndrome, where the baby's lungs are not able to expand properly. Breathing difficulties in preterm babies are a critical problem because they can lead to complications and may require medical interventions such as oxygen therapy or mechanical ventilation to support their breathing.
10.
Which of the following is NOT accurate regarding alcohol use and pregnancy?
Correct Answer
C. Most doctors in the US advise pregnant women to use alcohol in moderation during pregnancy.
11.
Neurogenesis refers to the process by which:
Correct Answer
A. The fetal brain develops new neurons
Explanation
Neurogenesis refers to the process of the fetal brain developing new neurons. This process is crucial for the growth and development of the brain, as it allows for the formation of new neural connections and the overall complexity of the brain. During neurogenesis, neural stem cells in the fetal brain divide and differentiate into specialized neurons, which then migrate to their appropriate locations in the brain. This continuous production of new neurons is essential for various brain functions, including learning, memory, and overall cognitive abilities.
12.
Which Apgar score indicates that a newborn is in normal health?
Correct Answer
D. 7
Explanation
An Apgar score is a quick assessment of a newborn's health immediately after birth. It evaluates the baby's heart rate, breathing, muscle tone, reflexes, and skin color. The score ranges from 0 to 10, with 7 to 10 indicating that the newborn is in normal health. Therefore, a score of 7 is the correct answer as it suggests that the baby is in good condition and adapting well to the outside environment.
13.
Synaptogenesis refers to the process by which:
Correct Answer
B. New connections between neurons develop.
Explanation
Synaptogenesis refers to the process by which new connections between neurons develop. During this process, neurons form synapses, which are the connections between nerve cells. These synapses allow for communication and the transmission of signals between neurons. Synaptogenesis is a crucial process in brain development and plays a significant role in learning, memory, and overall brain function. It occurs throughout life but is particularly active during early development, allowing the brain to establish its complex network of connections.
14.
When there is a strong parental alliance:
Correct Answer
D. All of the above
Explanation
When there is a strong parental alliance, it means that the mother and father cooperate because of their mutual commitment to their children. They agree to support each other in their shared parental roles. This strong alliance creates a positive and supportive environment for the children, which increases their chances of thriving. Therefore, all of the above statements are true when there is a strong parental alliance.
15.
The critical period for preventing physical defects appears to be the:
Correct Answer
B. Embryonic period
Explanation
The embryonic period is the correct answer because it is the stage of prenatal development during which the major organs and body systems are formed. This period typically occurs from the third to the eighth week of pregnancy. It is a critical time for preventing physical defects because any disruptions or abnormalities during this period can have long-lasting effects on the development of the baby's organs and structures. Therefore, proper care and avoidance of harmful substances during the embryonic period are crucial for ensuring a healthy pregnancy and preventing physical defects.