The maternity nurse is cognizant of what important structure and function of the placenta?
A) As the placenta widens, it gradually thins to allow easier passage of air and nutrients.
B) As one of its early functions, the placenta acts as an endocrine gland.
C) The placenta is able to keep out most potentially toxic substances, such as cigarette smoke, to which the mother is exposed.
D) Optimal blood circulation is achieved through the placenta when the woman is lying on her back or standing.

Question

Quizplus · Accepted Answer

The placenta produces four hormones necessary to maintain the pregnancy: hCG,hPL,estrogen,and progesterone.The placenta widens until 20 weeks of gestation and continues to grow thicker.Toxic substances such as nicotine and carbon monoxide readily cross the placenta into the fetus.Optimal circulation occurs when the woman is lying on her side.

The Maternity Nurse Is Cognizant of What Important Structure and Function