All Human Anatomy and Physiology Resources
Example Questions
Example Question #11 : Reproductive Physiology
Fertilization typically takes place in which location?
Ovary
Uterus
Fallopian tube
Vagina
Fallopian tube
The most common location for the fertilization of the egg is the fallopian tube. The zygote then undergoes several divisions and some development before implanting in the endometrium of the uterus as a blastocyst. Abnormal implantation can occur while the blastocyst is still in the fallopian tube, resulting in an ectopic pregnancy. This event generally requires surgery to rectify and can be extremely dangerous to the mother and developing embryo.
Example Question #1 : Help With Reproductive Proteins And Hormones
What is the purpose of human chorionic gonadotropin (hCG) in the female body?
Causes menstruation
Causes ovulation
Maintains the corpus luteum
Maintains the placenta
Stimulate the corpus albicans
Maintains the corpus luteum
Human chorionic gonadotropin is a peptide hormone that helps prevent the breakdown of the corpus luteum. This allows the corpus luteum to continue secreting progesterone and estrogen during implantation. As the placenta forms, it eventually takes over the job of secreting hormones for the corpus luteum. The corpus luteum is only preserved when fertilization has occurred; normally, the structure devolves into the corpus albicans. Human chorionic gonadotropin can thus be used to detect pregnancy, as it is only secreted after fertilization.
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