QuestionDecember 17, 2025

Question 100 (1 point) Which one of the following structures degenerates if a fertilized legg does not embed in the uterus? oviduct secondary oocyte corpus luteum ovary zona pellucida

Question 100 (1 point) Which one of the following structures degenerates if a fertilized legg does not embed in the uterus? oviduct secondary oocyte corpus luteum ovary zona pellucida
Question 100 (1 point)
Which one of the following structures degenerates if a fertilized legg does not embed
in the uterus?
oviduct
secondary oocyte
corpus luteum
ovary
zona pellucida

Solution
4.7(242 votes)

Answer

Corpus luteum Explanation 1. Identify role of each structure Oviduct transports egg; secondary oocyte becomes fertilized egg; ovary produces eggs; zona pellucida protects the egg; corpus luteum secretes progesterone to maintain uterine lining. 2. Determine what happens if implantation fails Without implantation, hCG is not produced; thus, **corpus luteum degenerates**, leading to drop in progesterone.

Explanation

1. Identify role of each structure<br /> Oviduct transports egg; secondary oocyte becomes fertilized egg; ovary produces eggs; zona pellucida protects the egg; corpus luteum secretes progesterone to maintain uterine lining.<br />2. Determine what happens if implantation fails<br /> Without implantation, hCG is not produced; thus, **corpus luteum degenerates**, leading to drop in progesterone.
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