As relates to the structure and function of the placenta, the nurse should be aware that.

The placenta is able to keep out most potentially harmful substances.

As one of its early functions, the placenta acts as an endocrine gland.

As the placenta widens, it gradually thins to allow easier passage of air and nutrients.

Optimal blood circulation is achieved through the placenta during pregnancy.

Answer and Explanation

The Correct Answer is B

Choice A rationale
Although the placenta acts as a partial barrier, it does not keep out all harmful substances, allowing some to cross and affect fetal development.
Choice B rationale
One of the placenta's early functions is producing hormones like human chorionic gonadotropin (hCG), estrogen, and progesterone, making it act as an endocrine gland.
Choice C rationale
The placenta does not thin out; it remains robust and increases in thickness to support the growing fetus and facilitate nutrient and gas exchange.
Choice D rationale
While optimal blood circulation through the placenta is crucial, this statement lacks detail on the specific structural and functional aspects of the placenta.

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Correct Answer is C

Explanation

Choice A rationale
Drinking as much as desired, even in the second trimester, can lead to fetal alcohol spectrum disorders. No safe amount of alcohol is known during pregnancy.
Choice B rationale
Despite being in the second trimester, no level of alcohol consumption is considered safe during pregnancy, as it poses a risk to fetal development.
Choice C rationale
The safest course is to abstain from alcohol throughout pregnancy as no specific amount has been deemed safe and it can cause irreversible harm to fetal development.
Choice D rationale
Even limiting alcohol consumption to three times a week poses a risk to fetal health, as any amount can potentially cause developmental issues.

A. Human chorionic gonadotropin (hCG). B. Testosterone. C. Insulin. D. Estrogen. E. Progesterone.

Correct Answer is ["A","D","E"]

Explanation

Choice A rationale
Human chorionic gonadotropin (hCG) maintains the corpus luteum, ensuring the continued production of progesterone and estrogen, which are crucial for maintaining pregnancy.
Choice B rationale
Testosterone is not produced by the placenta during pregnancy, but is rather a male sex hormone produced primarily by the testes in males and small amounts by the ovaries in females.
Choice C rationale
Insulin is not produced by the placenta; it is a hormone produced by the pancreas that regulates blood glucose levels in the mother's body during pregnancy.
Choice D rationale
Estrogen produced by the placenta stimulates the growth of the uterus and helps regulate various functions essential for a healthy pregnancy.
Choice E rationale
Progesterone produced by the placenta helps maintain the uterine lining, reduces uterine contractions, and supports a favorable environment for fetal development throughout pregnancy.

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As relates to the structure and function of the placenta, the nurse should be aware that.

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Naxlex Comprehensive Predictor Exams

A woman who is 14 weeks pregnant tells the nurse that she always had a glass of wine with dinner before she became pregnant. She has abstained during her first trimester and would like to know if it is safe for her to have a drink with dinner now. The nurse would tell her:

Correct Answer is C

Explanation

Along with gas exchange and nutrient transfer, the placenta produces many hormones necessary for normal pregnancy. These include (select all that apply)

Correct Answer is ["A","D","E"]

Explanation

The nurse has received a report regarding her patient in labor. The woman’s last vaginal examination was recorded as 3 cm, 30%, and -2. The nurse’s interpretation of this assessment is that:

Which occurrence is related to cervical dilation and effacement?

The client has been having contractions every 5 minutes for 7 hours. Which factor would the nurse use to determine if this is true labor?

The fetal monitor tracing shown is associated with:

Which factor would alert the nurse that a pregnant woman is at risk for the development of toxoplasmosis?

The most common cause of decreased variability in the FHR that lasts 20 minutes or less is:

As relates to the structure and function of the placenta, the nurse should be aware that.