Difficulty: Medium
Average Score: 88%
Entry Exam
Which of the following structures is a mass within the ovary that secretes hormones to maintain the uterine lining during pregnancy?
Correct answer
D
Rationale
The correct answer is the corpus luteum. The corpus luteum is a temporary endocrine structure in the ovary that forms after ovulation. It secretes hormones, primarily progesterone, which are essential to maintain the uterine lining during pregnancy. The other options, such as the oviduct, umbilical cord, and oocyte, do not have the function of secreting hormones to support the uterine lining in pregnancy.