Human Reproduction: Fertilization Process
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Questions and Answers

What is the typical weight gain for a mother during the first trimester?

  • 1 lb per month (correct)
  • 2 lbs per month
  • 1 lb per week
  • 2 lbs per week

    • Why does morning sickness occur?

  • Due to a decrease in blood flow to the uterus
  • Due to an increase in hormones and a decrease in peristalsis (correct)
  • Due to an increase in oxygen demand
  • Due to a decrease in hormones and an increase in peristalsis

    • What is the purpose of oxytocin in childbirth?

  • To decrease the force of uterine contractions
  • To slow down the heart rate of the mother
  • To reduce blood pressure in the mother
  • To increase the force and length of uterine contractions (correct)

    • What is the typical duration of the postpartum period?

    <p>6 weeks</p> Signup and view all the answers

    What is the term for the uterus returning to its original size after childbirth?

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

    What is the purpose of the APGAR score?

    <p>To evaluate the baby's health in the first few minutes</p> Signup and view all the answers

    Why do babies have a harder time regulating their body temperature?

    <p>All of the above</p> Signup and view all the answers

    What is the purpose of Montgomery glands during breastfeeding?

    <p>To secrete oil to prevent chapping or cracking around the nipple</p> Signup and view all the answers

    What is the typical duration of the neonatal period?

    <p>13 days</p> Signup and view all the answers

    What is the composition of breast milk for the first 3 days postpartum?

    <p>High in immunoglobulin</p> Signup and view all the answers

    What happens to most of the sperm cells due to the environment they encounter?

    <p>They die due to the acidic environment</p> Signup and view all the answers

    What is the purpose of capacitation in sperm cells?

    <p>To let the sperm's enzymes begin to penetrate the oocyte</p> Signup and view all the answers

    How long can sperm cells survive inside the female reproductive tract?

    <p>3-5 days</p> Signup and view all the answers

    What happens to the oocyte if it is not fertilized within a day?

    <p>It dies</p> Signup and view all the answers

    What is the purpose of the fast block after fertilization?

    <p>To prevent more than one sperm from entering the oocyte</p> Signup and view all the answers

    What is the result of fertilization, in terms of the genetic material?

    <p>The combination of two haploid sets of chromosomes</p> Signup and view all the answers

    What is the time period known as when the offspring develops from conception to birth?

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

    During which weeks is the offspring called an embryo?

    <p>Weeks 3-8</p> Signup and view all the answers

    What is the purpose of the trophoblasts in the pre-embryonic stage?

    <p>To become the placenta</p> Signup and view all the answers

    What is the percentage of the time that the conceptus fails to implant and is shed during menses?

    <p>50-75%</p> Signup and view all the answers

    What is the name of the condition where the placenta covers the opening to the cervix?

    <p>Placenta previa</p> Signup and view all the answers

    During which weeks does the placenta develop?

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

    What is the consequence of a lack of folate in the diet during pregnancy?

    <p>Spina bifida</p> Signup and view all the answers

    What is the typical length of a newborn?

    <p>20 inches</p> Signup and view all the answers

    When is the due date calculated from?

    <p>The last menstrual period</p> Signup and view all the answers

    Approximately how many liters of breast milk will a female produce per infant during a growth spurt?

    <p>1.5 liters</p> Signup and view all the answers

    What is the term for the physical appearance and behavior of an individual?

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

    What is the hormone responsible for loosening ligaments at the hip joint and dilating the cervix?

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

    What is the genetic disorder caused by having three copies of chromosome 21?

    <p>Down's syndrome</p> Signup and view all the answers

    What is the term for a copy of a gene?

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

    What is the probability of a recessive gene being expressed in the phenotype?

    <p>0% unless paired with another recessive gene</p> Signup and view all the answers

    What is the result of having only one X chromosome instead of two?

    <p>Turner syndrome</p> Signup and view all the answers

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