UA BSC 109 - Reproduction and Birth (5 pages)

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Reproduction and Birth



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Reproduction and Birth

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Discusses the stages of birth and different types of contraception


Lecture number:
23
Pages:
5
Type:
Lecture Note
School:
University of Alabama
Course:
Bsc 109 - Intro Biology Non Maj II
Edition:
1

Unformatted text preview:

BSC 109 1st Edition Lecture 23 Outline of Last Lecture I Producing concentrated urine conserving water II Urination depends on a reflex III Kidneys maintain homeostasis IV Disorders of the urinary system Chapter 16 Reproduction System I II III IV V VI VII VIII The male reproductive system delivers sperm Accessory glands help sperm survive Sperm production requires several cell divisions Testosterone affects male reproductive capacity The female reproductive system produces eggs and supports pregnancy Mammary glands nourish the infant Menstrual cycle consists of ovarian and uterine cycles Human sexual response intercourse and fertilization Outline of Current Lecture IX Fertilization one sperm penetrates the egg X Twins may be fraternal or identical XI Development cleavage morphogenesis differentiation and growth XII Pre embryonic development the first two weeks XIII Embryonic development weeks three to eight XIV The placenta and umbilical cord XV The embryo develops rapidly XVI Birth and the early postnatal period XVII The transition from fetus to newborn XVIII Lactation produces milk to nourish the newborn XIX From birth to adulthood XX Death is the final transition XXI Birth control methods controlling fertility Current Lecture XXII Fertilization one sperm penetrates the egg A Ejaculate may contain several hundred million sperm B Sperm may be viable for up to 5 days within the female reproductive tract XXIII Twins may be fraternal or identical 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 A Fraternal twins 1 Ovulation of more than one oocyte each of which is fertilized by different sperm 2 No more similar than two siblings 3 May be different genders B Identical twins 1 One oocyte fertilized 2 Split into two pre embryos before 16 cell stage 3 Same gender look alike XXIV Development cleavage morphogenesis differentiation and growth A Cleavage 1 Series of cell



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