Fertilization Process and Sperm Journey
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Questions and Answers

During which weeks does the placenta take over the endocrine function from the corpus luteum?

  • Weeks 12-17 (correct)
  • Weeks 21-30
  • Weeks 14-16
  • Weeks 9-12

    • What is the primary function of relaxin during pregnancy?

  • To stimulate the growth of mammary glands
  • To increase the production of thyroid hormone
  • To stimulate fetal development
  • To loosen the pelvis and dilate the cervix (correct)

    • What is the approximate increase in caloric intake required during the 2nd and 3rd trimesters of pregnancy?

  • 300 calories per day (correct)
  • 400 calories per day
  • 100 calories per day
  • 200 calories per day

    • What is the primary hormone responsible for stimulating male gonads to produce testosterone during pregnancy?

    <p>hCG</p> Signup and view all the answers

    What is the physiological response that occurs in the mother's body near the end of pregnancy due to upward pressure of the uterus?

    <p>Increased gastric reflux</p> Signup and view all the answers

    What is the term for the expulsion of the plug of mucus covering the cervix, along with a small amount of blood, that occurs about 2 days before labor?

    <p>Bloody show</p> Signup and view all the answers

    What is the primary function of the foramen ovale and ductus arterioles in the infant's heart?

    <p>To close after birth and adjust circulation</p> Signup and view all the answers

    What is the primary function of colostrum in the first 72 hours after birth?

    <p>To provide passive immunity to the infant</p> Signup and view all the answers

    What is the term for the process by which the uterus returns to its pre-pregnancy size after childbirth?

    <p>Involution</p> Signup and view all the answers

    What is the term for an individual who has a recessive gene that can be passed on to their offspring?

    <p>Carrier</p> Signup and view all the answers

    What is the term for the pair of chromosomes that determines the sex of an individual?

    <p>Sex chromosomes</p> Signup and view all the answers

    What is the term for the expression of an individual's genes?

    <p>Phenotype</p> Signup and view all the answers

    During fertilization, what is the main factor that acts as a barrier to sperm entry?

    <p>Thick cervical mucus</p> Signup and view all the answers

    What is the process called when the sperm penetrates the corona radiata and binds to a receptor in the zona pellucida?

    <p>Acrosomal reaction</p> Signup and view all the answers

    What is the term for the fertilized oocyte?

    <p>Zygote</p> Signup and view all the answers

    What is the function of the yolk sac during embryonic development?

    <p>Provides nourishment to the embryo</p> Signup and view all the answers

    What is the term for the process where the fertilization membrane forms, preventing further sperm penetration?

    <p>Depolarization</p> Signup and view all the answers

    During which week of embryonic development does the conceptus reach the uterus?

    <p>Week 2</p> Signup and view all the answers

    What is the term for the indentation in the embryonic disc where cells migrate to form endoderm or mesoderm?

    <p>Primitive streak</p> Signup and view all the answers

    What is the function of the amnion during embryonic development?

    <p>Surrounds the embryo with fluid for protection</p> Signup and view all the answers

    During which weeks of embryonic development does the placenta develop?

    <p>Weeks 4-12</p> Signup and view all the answers

    What is the term for the pregnancy where the implantation occurs outside of the uterus?

    <p>Ectopic pregnancy</p> Signup and view all the answers

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