EBK HUMAN BIOLOGY
11th Edition
ISBN: 8220100545931
Author: MCMILLAN
Publisher: Cengage Learning US
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Chapter 17, Problem 9SQ
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 occur in the neonate quickly after the birth.
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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.
Which of the following rows correctly completes the following sentence? ______A_____ occurs during fetal development when an embryo is not exposed to adequate levels of ____B___ _______ during neurulation.
Select one:
a.
A
B
Malformation of the limbs
Thalidomide
b.
A
B
Spina bifida
Vitamin B12
c.
A
B
Anencephaly
Folic acid
d.
A
B
Microcephaly
Zika virus
Which of the following condition will
lead to a small- for -gestational -age
fetus due to less blood supply to the
fetus? *
O A. Diabetes in the mother.
B. Maternal cardiac condition.
O C. Premature labor.
D. Abruptio placenta.
Chapter 17 Solutions
EBK HUMAN BIOLOGY
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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- 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_forwardWhich 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_forwardDuring the first 48-72 hours after birth, the breasts produce ________, a substance rich in protein and immunoglobulins which helps the baby adjust to a non-sterile environment. Group of answer choices a.endolymph b.colostrum c.meconium d.amniotic fluidarrow_forward
- 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.arrow_forwardIf a child develops an anterior pituitary tumour that reduces LH and FSH production,the child will _________.A. not develop gonads.B. experience delayed or disrupted puberty.C. produce excess testosterone or estrogen.D. develop secondary sexual characteristics before puberty.arrow_forwardBlood 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 discarrow_forward
- Which of the following statements is incorrect?a. The placenta secretes hormones such as progesterone, hCG, and estrogen.b. Embryonic tissue and maternal tissue forms the placenta.c. The chorion supplies nutrients to the embryo by diffusion.d. The umbilical cord is formed by one artery and two veinsarrow_forwardThe following are correct statements about false labor, except? * A.The pain is irregular in intensity and frequency. B.The duration of contraction progressively lengthens over time. C. There is no bloody vaginal discharge. O D. The cervix is still closed.arrow_forwardThe onset of labor may be a result ofa. increased estrogen secretion by the placenta.b. increased glucocorticoid secretion by the fetus.c. increased secretion of oxytocin.d. stretch of the uterus.e. All of these are correctarrow_forward
- 1. Embryonic development occurs during this period. A. from the ninth week of gestation to birth B. from fertilization to implantation C. from implantation to the end of the eighth week of gestation D. from conception to birth 2. Part of the gastrulation phase includes the formation of germ layers that will... A. go on to form the placenta. B. form the ectoderm, mesoderm, and endoderm that will become specific tissues and organs. C. spread disease. D. produce the amniotic fluid.arrow_forwardAll of the following cardiovascular events occur during pregnancy except a. plasma volume increases. b. blood pressure increases during the second trimester. c. cardiac output increases by 30–50%. d. stroke volume increases.arrow_forwardWhich of the following statements is not true about the placenta? A. It provides exchange of wastes and nutrients between the mother and the fetus. B. It develops by the third month of gestation. C. It allows transfer of maternal immunoglobulin D. It allows passage of bacteria and virus. -Provide explanationarrow_forward
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