UH BIOL 1344 - Follicular Maturation (2 pages)

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Follicular Maturation

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Follicular Maturation


Lecture notes for the reproductive system

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Lecture Note
University of Houston
Biol 1344 - Hum Anat Physiol
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BIOL 1344 Lecture 27 Outline of Last Lecture I Anatomy of the Female Reproductive System A Internal and External Genitalia B Ovaries C Uterus D Cervix E Vagina II Ovarian Cycle Outline of Current Lecture III Follicular Maturation IV Uterus V Ovulation Cycle Current Lecture Follicular maturation GnRH LH FSH are the hormones needed Granulosa cells secrete estradiol 17 beta the corpus luteum secretes progesterone which maintains pregnancy after the first trimester the corpus luteum dies and the placenta takes over this job The chorion secretes hCG human chorionic gonadotropin starting 2 3 weeks after fertilization Urine is tested for the presence of hCG to detect pregnancy Uterus perimetrium is the outer layer myometrium is the smooth muscles which respond to oxytocin for labor and child birth The endometrium is the basal layer and a functional layer which is sloughed off during menstruation The process of this is that the spiral arteries go through vasospasm which causes ischemia and the tissue dies and sloughs off After about 5 days it regenerates and new blood vessels form this is called angiogenesis Endometriosis is a painful disease in which endometrium grows outside of the uterus cavity In the ovulation cycle the period before ovulation is called the proliterative phase After ovulation is called secretory or glycogen phase During this time the endometrium is ready for implantation Pregnancy lasts 38 weeks from the end of menstrual cycle or 40 weeks from the beginning of last menstrual cycle so 266 280 days During pregnancy GnRH FSH and LH are inhibited through progesterone so that there is no more ovulation Other hormones which are These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute vital are activin which promotes FSH effects and inhibin which blocks FSH Relaxin is a hormone that relaxes the pubic symphysis during parturition which is child birth Progesterone is a contraception so there is no menstruation Fertility drugs contain clomiphene which blocks estrogen and increases GnRH FSH and LH

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