A.
Which of the following is a mass within the ovary that secretes hormones to maintain the uterine lining during pregnancy?
A.
Oviduct
B.
Corpus luteum
C.
Oocyte
D.
Umbilical cord
B. Corpus luteum
The corpus luteum is a mass of cells within the ovary that secretes hormones, such as progesterone and estrogen, to maintain the uterine lining during early pregnancy. If pregnancy does not occur, the corpus luteum degenerates.