Female Reproduction Study Guide
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Female Reproduction Study Guide

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Female Reproduction Study Guide Female Reproduction Study Guide Presentation Transcript

  • Female Reproduction The Menstrual Cycle and Embryonic Development
  • Menstrual Cycle Notes
    • Purpose is to prepare the female body for baby
    • Length is approximately 28 days
    • 4 phases: Ovulation, Luteal, Menstruation, Follicular
    • 4 hormones: FSH, LH, Estrogen, Progesterone
  • Menstrual Cycle Phases
    • Ovulation- a mature egg is released from the ovary
    • Luteal- uterus lining is beginning to thicken to prepare for baby
    • Menstruation- if fertilization does not occur, the uterus lining will be shed
    • Follicular- a new egg is becoming mature in the ovary
  • Menstrual Cycle Hormones
    • FSH (follicle-stimulating)- hormone that stimulates the maturation of eggs in the ovaries
    • LH (luteinizing)- hormone that starts ovulation
    • Estrogen- hormone that allows uterus lining to thicken, develops follicles, and will form placenta
    • Progesterone- hormone that allows milk production, helps with onset of labor, and lowers immune response to accept pregnancy
  • Menstrual Cycle Themes
    • The menstrual cycle is a highly complex process
    • The menstrual cycle is achieved by 4 hormones working like an orchestra to play a symphony
    • These hormones are subject to feedback mechanisms
    • Any changes in these hormones will impact the menstrual cycle, like birth control pills, for example
  • Every Picture Tells A Story
    • As you go through the pictures that follow, see if you can understand what the stories they are trying to tell.
  •  
  • Menstrual Cycle and Feedback Mechanisms
    • Feedback Mechanisms help us understand how hormones work
    • The pituitary gland and the thyroid gland produce the 4 menstrual cycle hormones
    • The nervous system monitors the hormones and detects changes in the female body
    • Once a change is detected and the hormone has carried out its function, the nervous system will send a message back to the endocrine system (pituitary/thyroid gland) to stop producing the hormones.
  • Embryonic Development as a Story
    • One cell to a trillion cells
    • 4 themes to the story: cleavage, patterning, differentiation, and growth
    • Egg + Sperm unite = fertilization
    • Human: 23 + 23 = 46 chromosomes
    • Zygote -> embryo -> fetus -> newborn
  • Embryonic Development Themes of the Story
    • Cleavage- the divisions that begin with the fertilized egg (mitosis)
    • Patterning- the early organization of those cells (morula, blastula, gastrula)
    • Differentiation- the cells are no longer the same
    • Growth- the cells get bigger and develop into: tissues, organs, organ systems, highly complex organism
  • Placenta
    • Placenta is the world where the baby develops
    • What happens to the mother, happens to the baby
  •