Multiple Choice
Which structure allows blood to move from the fetal pulmonary trunk directly into the aorta?
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27. The Reproductive System
Introduction to the Reproductive System
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Which statement is true of the corpus luteum?
A
It is formed before ovulation occurs.
B
It secretes progesterone to maintain the uterine lining after ovulation.
C
It is a permanent structure in the ovary.
D
It produces sperm in the male reproductive system.
Verified step by step guidance1
Understand the role of the corpus luteum in the female reproductive system. The corpus luteum is a temporary endocrine structure formed in the ovary after ovulation.
Recall that ovulation is the process where a mature egg is released from the ovarian follicle. After the egg is released, the remaining follicle transforms into the corpus luteum.
Learn the primary function of the corpus luteum: it secretes hormones, primarily progesterone, which is crucial for maintaining the uterine lining (endometrium) to support a potential pregnancy.
Eliminate incorrect statements: The corpus luteum is not formed before ovulation but after ovulation. It is not a permanent structure; it degenerates if pregnancy does not occur. It is also not involved in sperm production, which is a function of the male reproductive system.
Conclude that the correct statement is: 'It secretes progesterone to maintain the uterine lining after ovulation.' This aligns with the physiological role of the corpus luteum in the reproductive cycle.
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