UH BIOL 1361 - The Female Reproductive System and Case Study (5 pages)

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The Female Reproductive System and Case Study



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The Female Reproductive System and Case Study

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The 26th lecture that goes over the female reproductive cycles and a case study.


Lecture number:
26
Pages:
5
Type:
Lecture Note
School:
University of Houston
Course:
Biol 1361 - Intro to Biological Science
Edition:
1
Unformatted text preview:

BIOL 1361 1nd Edition Lecture 26 Outline of Last Lecture I Lipid Soluble Hormones II Compare and Contrast Receptor Types III Hormonal Regulation of Gametogenesis in Vertebrates IV Hormonal Regulation of Gametogenesis in Vertebrates V Hormones and Spermatogenesis VI Role of Hormones Outline of Current Lecture I Female II Neuroendocrine Regulation III Follicular Phase IV Luteal Phase V Ovulated Egg VI Case Study Vocal Cues of Ovulation in Human Females Current Lecture Final is 60 questions I Female a Oviduct Fallopian Tube 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 b Corpus Luteum II Neuroendocrine Regulation a Standard cycle length 28 days b Follicular Phase follicle is growing in days 0 14 i The LH concentration goes up until it peaks after it peaks ovulation happens c Luteal Phase i From ovulation until end of cycle d Menstrual Flow Phase i First 5 7 days ii When estrogen and progesterone are low e Proliferative Phase f III Secretory Phase Follicular Phase days 0 14 a GnRH from the hypothalamus i Stimulates pituitary release of LH and FSH b LH and FSH stimulate E2 secretion and growth of follicles containing eggs c E2 has POSITIVE feedback on pituitary d LH surge ends follicular phase starts luteal phase IV Luteal Phase days 14 28 a LH stimulates i OVULATION ii Conversion of follicle cells to corpus luteum iii Progesterone P production by corpus luteum b P maintains uterine lining prevents uterine contractions V Ovulated Egg a Fertilized uterine lining makes hCG Corpus luteum makes P maintains pregnancy b NOT Fertilized c l disintegrates P decreases pituitary secretes FSH and LH new oocytes begin maturing VI Case Study Vocal Cues of Ovulation in Human Females a Background i LH surge precedes ovulation by 24 48 hours ii Probability of conception fertility is highest on the 2 days before ovulation b Research Questions i Can men detect when women are most fertile ii What sort of cue indicates fertility behavior smell appearance c Hypothesis and Prediction i Hypothesis 1 Human females broadcast a detectable ovulatory cue ii Prediction 1 The human ovulatory cue is a vocal cue associated with female attractiveness d Experimental Design i Subjects 1 69 women students at UCLA 2 Ages 18 39 mean 20 3 years 3 No hormonal contraception 4 21 33 day cycles ii Experiment 1 Compare the pitch of women s voices during high and low fertility phases of the monthly cycle 2 Each woman was recorded on a low fertility day and a highfertility day e Draw a Timeline i Assume a 28 day cycle ii Fertility is greatest right before ovulation day 14 f Sampling i Female technicians recorded women reading the sentence Hi I m a student at UCLA ii Day of the LH surge for each woman was determined using a urine test iii Low fertility day 1 Scheduled for 4 10 days before next expected menses 2 Actualy timing in monthly cycle 6 36 days before next actual menses iv High fertility day 1 Scheduled for 15 17 days prior to next menses 2 Actual LH surge occurred 2 days before to 3 days after the high fertility recording session g Difference in Voice Pitch between high and low fertility recordings h Results i Pitch low fertility 206 26 ii Pitch high fertility 211 28 iii Pairs of recordings from a subjects high and low fertility days were played to 15 listeners


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