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 (B)</p> Signup and view all the answers

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

<p>Involution (B)</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 (A)</p> Signup and view all the answers

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

<p>All of the above (D)</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 (C)</p> Signup and view all the answers

What is the typical duration of the neonatal period?

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

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

<p>High in immunoglobulin (C)</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 (D)</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 (A)</p> Signup and view all the answers

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

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

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

<p>It dies (B)</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 (B)</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 (C)</p> Signup and view all the answers

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

<p>Gestation (B)</p> Signup and view all the answers

During which weeks is the offspring called an embryo?

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

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

<p>To become the placenta (A)</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% (B)</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 (A)</p> Signup and view all the answers

During which weeks does the placenta develop?

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

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

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

What is the typical length of a newborn?

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

When is the due date calculated from?

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

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

<p>Phenotype (D)</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 (D)</p> Signup and view all the answers

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

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

What is the term for a copy of a gene?

<p>Allele (A)</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 (A)</p> Signup and view all the answers

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

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

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