Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Dee Unglaub Silverthorn, Ph.D. H UMAN P HYSIOLOGY PowerPoint ® Lecture Slide.

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Presentation transcript:

Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Dee Unglaub Silverthorn, Ph.D. H UMAN P HYSIOLOGY PowerPoint ® Lecture Slide Presentation by Dr. Howard D. Booth, Professor of Biology, Eastern Michigan University AN INTEGRATED APPROACH T H I R D E D I T I O N Chapter 26, part A Reproduction and Development

Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings About this Chapter How male and female reproductive systems differentiate The reproductive organs and how they work How gametes are produced and fertilized Pregnancy, stages of development, birth & lactation Reproductive and developmental maturation and aging

Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Sex Determination: Overview Dimorphism: Males  sperm Females  eggs Chromosomes Autosomes Sex Chromosomes X - chromosome Y - chromosome Figure 26-1: Human chromosomes

Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Sex Determination: Overview Figure 26-2: Inheritance of X and Y chromosomes

Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Bipotential tissues: genes & hormones direct differentiation Gonad  testis or ovary Wolffian duct  Vas deferens, Mullerian duct  oviduct Sexual Differentiation: Internal Embryonic Development

Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Sexual Differentiation: Internal Embryonic Development Figure 26-3a: Sexual development in the human embryo

Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Bipotential tissues: genital tubercle, urethral folds, urethral groove and labioscrotal swellings Sexual Differentiation: External Genitalia

Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Sexual Differentiation: External Genitalia Figure 26-3b: Sexual development in the human embryo

Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Pathway for Sexual Development: Review for Genes to Organs Figure 26-4: Role of the SRY gene in male development

Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Overview of Gametogenesis: Producing Eggs or Sperm Figure 26-5: Gametogenesis

Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Regulation of Reproduction: General Pathways Hypothalamus: pulse generator Gonadotropin releasing H (GnRH) Anterior Pituitary Lutenizing H (LH) Follicle stimulating H (FSH) Ovary: progesterone Estrogen, inhibin Testis: testosterone

Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Regulation of Reproduction: General Pathways Figure 26-7: General pattern of hormonal control of reproduction

Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Male Reproductive Anatomy and Physiology Testis Epididymis Vas deferens Seminal vesicle Prostate Bulbourethral Ejaculatory duct Urethra Penis

Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Male Reproductive Anatomy and Physiology Figure 26-9a: ANATOMY SUMMARY: Male Reproduction