Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 17, Problem 10SQ
Summary Introduction
Introduction: The process of physical expulsion of the fetus and placenta from the uterus is called labor or parturition. After expulsion, the fetus is known as neonate or newborn. To adjust with the life outside the uterus, a variety of cardiovascular and respiratory changes occurs in the neonate quickly after the birth.
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1. A placenta vera is formed if
a.The placenta is removed during birth.
b. The maternal blood bathes the chorionic villi.
c. The epithelium of the decidua is not penetrated by the chorion.
d. The binucleated chorionic cells penetrate the decidual epithelium.
2. Which of the following does NOT occur during decidualization?
a. endometrial capillaries dilate and form sinusoids
b. syncytiotrophoblast extend further and form chorionic villi
c. endometrial stromal cells accumulate glycogen and lipids
d. syncytiotrophoblast is eroded and lacunae are filled with maternal blood
3. Which of the following reasons justifies the midblastula transition?
a. The yolk at the vegetal pole slows down the cleavage divisions.
b. The embryo has already completed the requirements for initial cleavage.
c. The embryo needs to replenish transcripts after using its maternal reserves.
d. The embryo needs to replenish its energy after several rounds of fast…
Blood islands are ________.a. clusters of blood-filtering cells in the placentab. masses of pluripotent stem cells scatteredthroughout the fetal bone marrowc. vascular tubes that give rise to the embryonictubular heart
d. masses of developing blood vessels and formedelements scattered throughout the embryonic disc
Chapter 17 Solutions
Human Biology (MindTap Course List)
Ch. 17 - Define and describe the main features of the...Ch. 17 - Prob. 2RQCh. 17 - Summarize the development of an embryo and a...Ch. 17 - Label the early development stages shown in the...Ch. 17 - Prob. 1SQCh. 17 - During cleavage, the _______ is converted to a...Ch. 17 - Prob. 3SQCh. 17 - Prob. 4SQCh. 17 - _________ is the gene-guided process by which...Ch. 17 - In a human zygote, the cell divisions of cleavage...
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- 1 2 3 4 5 6 7 8 A. esophagus B. kidney C. heart D. spleen E. small intestine F. liver G. diaphragm H. lung I. cecum J. stomacharrow_forward1. A placenta vera is formed if a.The placenta is removed during birth. b. The maternal blood bathes the chorionic villi. c. The epithelium of the decidua is not penetrated by the chorion. d. The binucleated chorionic cells penetrate the decidual epithelium. 2. Which of the following does NOT occur during decidualization? a. endometrial es dilate and form sinusoids b. syncytiotrophoblast extend further and form chorionic villi c. endometrial stromal cells accumulate glycogen and lipids d. syncytiotrophoblast is eroded and lacunae are filled with maternal blood 3. Which of the following reasons justifies the midblastula transition? a. The yolk at the vegetal pole slows down the cleavage divisions. b. The embryo has already completed the requirements for initial cleavage. c. The embryo needs to replenish transcripts after using its maternal reserves. d. The embryo needs to replenish its energy after several rounds of fast division.arrow_forwardWhich of the following materials do not cross the placenta from the mother’s blood system to the baby’s blood system? Select one: a. Glucose, vitamins, hormones b. Antibiotic medication for infections c. Alcohol, nicotine, pathogens d. Red blood cellsarrow_forward
- Chemicals that affect certain body organs a. testosterone b. hormones c. estradiol d. inhibinarrow_forward40. What is the content of reticulocyte that differs it from mature erythrocyte? A. Heinz bodies B. Inclusion bodies C. Reticulin fiber D. A and B 41. Which of the following method is used to collect placental cells for karyotyping? A. amniocentesis B. Chorionic villus sampling C. Both A and B D. Nonearrow_forwardExplain why each choice (a-d) is correct or incorrect The blood testis barrier is to newly formed sperm cells as the blood thymus barrier is to a.T lymphocyte precursors b. Mast cells c. Plasma cells d. White pulparrow_forward
- Which of the following statements is true? a. Two umbilical veins carry oxygen-depleted blood from the fetal circulation to the placenta. b. One umbilical vein carries oxygen-rich blood from the placenta to the fetal heart. c. Two umbilical arteries carry oxygen-depleted blood to the fetal lungs. d. None of the above are true.arrow_forwardCarriers of human sex-linked disorders are ________. a. all children b. female children only c. male children onlyarrow_forward1. The umbilical arteries do the following: A. take deoxygenated blood and waste away from the embryo/fetus B. bring oxygenated blood and nutrients toward the embryo/fetus. C. move blood from the fetal lungs to the fetal heart D. move blood from the fetal heart to the fetal lungs 2. The three stages of labor are... A. dilation, amniotic sac rupture, expulsion B. dilation, mucus plug removal, expulsion C. dilation, expulsion, bleeding D. dilation, expulsion, placental 3. The cervix is fully dilated and ready for expulsion of the fetus at ... A. 10 cm B. 12 cm C. 14 cm D. 8 cmarrow_forward
- 20arrow_forward1. maternity case involves an infant with type AB blood. Four women claim to be the mother. You be the judge, as far as the blood type evidence allows. a. The woman with type A blood could not be the mother. b. The woman with type AB blood could not be the mother. c. The woman with type O blood could not be the mother. d. The woman with type B blood could not be the mother e. All the four could be the mother. conclusion plz answer all questionarrow_forward1. Gene ? A. Epistasis B. Height C. Red Petal D. Flower Color E. Lethal Factor 2. Sex chromosome syndrome A. Swyer’s syndrome B. Down’s syndrome C. Lethal Factor D. Rh Negative Blood E. Epistasis 3. Chromosomal aberration A. Swyer’s syndrome B. Down’s syndrome C. Lethal Factor D. Rh Negative Blood Epistasisarrow_forward
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