EBK HUMAN ANATOMY
8th Edition
ISBN: 9780100799554
Author: Martini
Publisher: YUZU
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Chapter 28, Problem 3RC
Summary Introduction
Introduction:
Pregnancy is also known as the gestation period which is basically the time in which the offspring grow inside the woman. Pregnancy may have multiple offspring involved such as twins. Pregnancy continues for nine months unless the offspring grows and develops completely.
Correct answer:
In the case of identical twins, the amniotic sacs will be separate.
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. In humans, identical twins are possible because(A) extraembryonic cells interact with the zygote nucleus.(B) convergent extension occurs.(C) early blastomeres can form a complete embryo if isolated.(D) the gray crescent divides the dorsal-ventral axis into new cells.
An infertile couple was advised to undergo In vitro fertilization by the doctor. Out of
the options given below, select the correct stage for transfer to the fallopian tube for
successful results?
(a) Zygote only
(b) Zygote or early embryo upto 8 blastomeres
(c) Embryos with more than 8 blastomeres
(d) Blastocyst Stage
In human development, an embryo is most sensitive to chemicals, radiation, and pathogens during the first trimester because this is the time when
a) tissues are differentiating
b) organs are increasing in size
c) the fetus grows rapidly
d) fetal movements begin
e) implantation occurs
Chapter 28 Solutions
EBK HUMAN ANATOMY
Ch. 28 - Match each numbered item with the most closely...Ch. 28 - Prob. 2RFTCh. 28 - Prob. 3RFTCh. 28 - Prob. 4RFTCh. 28 - Prob. 5RFTCh. 28 - Prob. 6RFTCh. 28 - Prob. 7RFTCh. 28 - Prob. 8RFTCh. 28 - Match each numbered item with the most closely...Ch. 28 - Prob. 10RFT
Ch. 28 - Identify the two extra-embryonic membranes and the...Ch. 28 - Prob. 12RFTCh. 28 - Prob. 13RFTCh. 28 - Prob. 14RFTCh. 28 - 15. A blastocyst is a(n)
(a) extra-embryonic...Ch. 28 - During the second trimester, the most significant...Ch. 28 - Prob. 17RFTCh. 28 - Prob. 18RFTCh. 28 - The extra-embryonic membrane that forms the...Ch. 28 - During implantation, the (a) syncytiotrophoblast...Ch. 28 - 1. What would be the fate of an embryo if the...Ch. 28 - Prob. 2RCCh. 28 - Prob. 3RCCh. 28 - Prob. 4RCCh. 28 - Prob. 5RCCh. 28 - Describe the effects of human chorionic...Ch. 28 - 7. What occurs during amphimixis?
Ch. 28 - Prob. 8RCCh. 28 - Prob. 9RCCh. 28 - Prob. 10RCCh. 28 - 1. Joe and Jane desperately want to have children,...Ch. 28 - 2. The virus that causes rubella, or "German...
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- Which of the following is required for successful fetal development after the egg has been fertilized? a) That the corpus luteum remains throughout the pregnancy b) Production of estrogen (estradiol) and progesterone from the placenta c) Release of hCG (human chorionic gonatotropin) from the placentaarrow_forwardDuring this procedure, a sample of the fluid that surrounds the fetus is obtained by inserting a needle through the walls of the abdomen and uterus. (a) DNA marking (b) chorionic villus sampling (c) ultrasound imaging (d) preimplantation genetic diagnosis (e) amniocentesisarrow_forwardWhich of the following consists of both fetal and maternal tissues? (a)umbilical cord (b) placenta (c) amnion (d) allantois (e) yolk sacarrow_forward
- At what stage of embryonic development does implantation occur? a) Before fertilisation b) At the blastocyst stage c) After cell division has occurred d) At the end of the first trimester e) During the 8 cell stagearrow_forwardA friend in your dormitory, a freshman, tells you that she just discovered she is 3 months pregnant. You know that since she came to college she has been experimenting with recreational drugs. Circle the best advice you could give her, and explain your choice. (a) She must stop taking the drugs, but they could not have affected her fetus during these first few months of her pregnancy. (b) Harmful substances usually cannot pass from mother to embryo, so she can keep using drugs. (c) There could be defects in the fetus, so she should stop using drugs and visit a doctor as soon as possible. (d) If she has not taken any drugs in the last week, she is OK.arrow_forwardAfter fertilisation, the resulting cell which gives rise to a new individual is the: (a) embryo (b) ovum (c) foetus (d) zygotearrow_forward
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- Which of the following is an INCORRECT statement? Question 6 options: a) The early embryo of a higher animal is never like a lower animal, but only like its early embryo. b) During the first three stages of development, blastomeres become smaller by way of each embryonic cleavage. c) The space inside of the neural tube will eventually become the space inside of the digestive system. d) A zygote results from the union of sperm and egg.arrow_forwardA human is a complex organism that develops from a zygote. Briefly explain some of the the steps in this development process in the form of a paragraph. In your answer, be sure to: 1) explain how a zygote formed, 2) compare the genetic content of the zygote to the body cells of the parents, 3) identify the structure in which embryonic/fetal development usually occurs within, and 4) identify the structure that forms, which provides nourishment and waste removal to/from the developing baby.arrow_forwardIf an egg cell were treated with EDTA, a chemical that bindscalcium and magnesium ions,(A) the acrosomal reaction would be blocked.(B) the fusion of sperm and egg nuclei would be blocked.(C) the fast block to polyspermy would not occur.(D) the fertilization envelope would not form.arrow_forward
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