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EBK HUMAN BIOLOGY
8th Edition
ISBN: 8220102019683
Author: Johnson
Publisher: PEARSON
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Question
Chapter 21, Problem 8TY
Summary Introduction
Introduction:
Prenatal development is the process that involves the development of the embryo into the fetus during the gestation period. The process of prenatal development begins with the fertilization and persists until the birth of an infant.
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Students have asked these similar questions
Identify a characteristic of a fetus in the sixth month of gestation.
a. It weighs between 5 and 7 pounds.
b. It can open and close its eyes and look in all directions.
c. It has fully developed reflex patterns.
d. It has a respiratory system that is adequate to survive outside the womb.
Which of the following structures develops into only the fetus?
a. Inner cell mass
b. Trophoblast
c. Blastocyst
d. Zygote
Which of the following statements regarding prenatal development risks is FALSE?
a. Cigarette smoking by women has serious adverse effects on prenatal and child development
b. Paternal factors can adversely affect prenatal development
c. Maternal nutritionplays little role in prenatal development
Chapter 21 Solutions
EBK HUMAN BIOLOGY
Ch. 21 - Prob. 1QCCh. 21 - Prob. 2QCCh. 21 -
1. Why does only one sperm fertilize the egg, and...Ch. 21 - Prob. 2CRCh. 21 - Prob. 3CRCh. 21 - Describe the stages of labor and delivery.Ch. 21 - What causes the newborn to take its first breath...Ch. 21 - Prob. 6CRCh. 21 - What causes the onset of puberty (sexual...Ch. 21 - Summarize the three main hypotheses of the causes...
Ch. 21 - Prob. 9CRCh. 21 - Prob. 10CRCh. 21 - Which of the following lists the correct order of...Ch. 21 - Which of the following will result in fraternal...Ch. 21 -
3. Which of the following processes is the first...Ch. 21 - Prob. 4TYCh. 21 - Prob. 5TYCh. 21 - Prob. 6TYCh. 21 -
7. Which of the following is mismatched?
a....Ch. 21 - Prob. 8TYCh. 21 - Prob. 9TYCh. 21 -
10. Which of the following would be detrimental...Ch. 21 - Prob. 11TYCh. 21 - Prob. 12TYCh. 21 - Prob. 13TYCh. 21 - Prob. 14TYCh. 21 - Which hormone plays a critical role both in...Ch. 21 - Prob. 1AWKCh. 21 - Prob. 2AWKCh. 21 - Prob. 3AWKCh. 21 - Each year, it is estimated that over 40,000...Ch. 21 - Prob. 5AWKCh. 21 - Prob. 6AWKCh. 21 - How is it possible that one's life could be...
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- Nutrient and waste requirements for the developing fetus are handled during the first few weeks by _____. a. the placenta b. diffusion through the endometrium c. the chorion d. the blastocystarrow_forwardMost newborns void in the first 24 hours after birth. The nurse interprets that which of the following has caused a reddish stain, sometimes called "red brick dust" after noting this on the newborn's diaper? a. Excess iron in the urine b. Bilirubin in the urine c. Uric acid crystals in the urine d. Mucus and urate in the urinearrow_forwardWhich of the following rows identifies the site of fertilization, and the hormone released when the fertilized egg implants, respectively? Select one: a. Site of Fertilization Hormone Released Fallopian tube hCG b. Site of Fertilization Hormone released Uterus hCG c. Site of Fertilization Hormone released Uterus Aldosterone d. Site of Fertilization Hormone Released Fallopian tube Aldosteronearrow_forward
- Which of the following structure develops into only the fetus? A. Blastocyte B. Zygote C. Trophoblast D. Inner cell massarrow_forwardThe timing of puberty can be influenced by which of the following? a. genes b. stress c. amount of body fat d. all of the abovearrow_forwardWhich developmental stage is mismatched? a. second week—implantation b. third week—heart development begins c. fourth and fifth week—limb buds appear d. sixth through eighth week—all organ systems present e. None of these stages are mismatched.arrow_forward
- Months pass as Ashley has an uneventful pregnancy. Eventually, Ashley goes into labor and arrives at the hospital to give birth. As Ashley progresses through the first stage of labor, all of the following occur except a. the fetus’s head pushes against the cervix, promoting the cervical dilation. b. oxytocin levels decrease as labor progresses. c. the amniotic sac may rupture. d. contractions become more frequent and more intense.arrow_forwardDuring the embryonic development, the trophoblast will develop into Select one: a. the yolk sac b. the amnion and amniotic cavity c. the chorion d. the embryonic discarrow_forwardWhich structures are responsible for maintaining levels of estrogen earlier and later in pregnancy? a "corpus luteum earlier, placenta later" b "uterus earlier, ovaries later" c "placenta earlier, umbilical cord later" d "placenta earlier, ovaries later"arrow_forward
- What 2 ways can delivery of the placenta be managed during the 3rd stage? Select one or more: a. Conservative management b. Physiological management c. Active managementarrow_forwardComponent of bilaminar germ disc: a.Hypoblast and endoderm b.Epiblast and hypoblast c.Epiblast and ectoderm d.Ectoderm and mesodermarrow_forwardWhich of the following statements is NOT correct about the umbilical cord? Select one: a. The umbilical cord is formed from the chorion. b. The placenta connects to the embryon via the umbilical cord. c. The umbilical cord consists of two arteries and one vein. d. The umbilical cord is formed from the yolk sac and the allantois.arrow_forward
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