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ANA 113 Lecture 38

Reproductive Cycle

How long is one cycle of the reproductive system in females? 28 days
What influences the female reproductive cycle? Brian (hypothalmus) and the endocrine system (pituitary and ovaries)
What are the two cycles of tthe female reproductive cycle? ovarian and uterine/endometrial
Ovarian cycle results in the production and release of a mature ovum and the hormones estrogen and progesterone
Uterine/endometrial cycle prepares for the implantaion of a fertilized ovum and hence for pregnancy
When does ovulation usually occur? Day 14 (approximately)
When is the ovum capible of being fertilized? for 24 hours after being released
How long are sperm viable in the female reproductive tract? 48-72 hours
What does the placenta develop from? both materal and fetal tissue
Umbilical arteries internal arteries of the fetus which travel through the umbilical cord and penetrate the villi in the endometrium, low O2 level
How is fetal blood returned to the fetus? umbilical vein, high O2 content
ectopic preganancy implantation of the fertilized ovum in an abnormal site that may result in a spontaneous abortion and danger to the mother
Placenta previa implantation of the fertilized ovum in the inferior portion of the uterus and development of the placenta which covers the opening of the cervix
Created by: Kachmiel