Essentials of Human Anatomy & Physiology (12th Edition)
12th Edition
ISBN: 9780134395326
Author: Elaine N. Marieb, Suzanne M. Keller
Publisher: PEARSON
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Textbook Question
Chapter 16, Problem 13MC
During human embryonic development, organogenesis occurs
a. during the first trimester.
b. during the second trimester.
c. during the third trimester.
d. just before birth.
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Which 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.
Suppose that in the near future, you are a prenatal care provider. In the most recent ultrasound checkup on the expecting mother, you unfortunately found that the fetus is suffering a neural tube defect in the form of anencephaly. Seeing as the mother is still in the 12th week of pregnancy or the 1st trimester, the pregnancy can still be terminated via medical means. How would you explain to the parents the situation they are in?
Which of the following statements is NOT correct about the umbilical cord?
a. The umbilical cord is formed from the yolk sac and the allantois.
b. The umbilical cord is formed from the chorion.
c. The umbilical cord consists of two arteries and one vein.
d. The placenta connects to the embryon via the umbilical cord.
Chapter 16 Solutions
Essentials of Human Anatomy & Physiology (12th Edition)
Ch. 16 - More than one choice may apply.
1. Which of the...Ch. 16 - 2. In terms of development, which of these pairs...Ch. 16 - Prob. 3MCCh. 16 - Prob. 4MCCh. 16 - The approximate area between the anus and clitoris...Ch. 16 - 6. Which of the following attach to the...Ch. 16 - Prob. 7MCCh. 16 - Select the false statement about the cervix of the...Ch. 16 - Each month, typically only one a. primary follicle...Ch. 16 - After ovulation, the ruptured follicle a....
Ch. 16 - The outer layer of the blastocyst, which attaches...Ch. 16 - Prob. 12MCCh. 16 - During human embryonic development, organogenesis...Ch. 16 - Prob. 14SAECh. 16 - What is the function of seminal fluid? Name the...Ch. 16 - Prob. 16SAECh. 16 - Prob. 17SAECh. 16 - Prob. 18SAECh. 16 - 19. How does enlargement of the prostate interfere...Ch. 16 - Prob. 20SAECh. 16 - Prob. 21SAECh. 16 - 22. Explain why a man’s sexual responsiveness and...Ch. 16 - Prob. 23SAECh. 16 - Prob. 24SAECh. 16 - 25. Name the structures of the female duct system,...Ch. 16 - Prob. 26SAECh. 16 - Prob. 27SAECh. 16 - Prob. 28SAECh. 16 - Prob. 29SAECh. 16 - List and describe the events of the menstrual...Ch. 16 - Prob. 31SAECh. 16 - Prob. 32SAECh. 16 - Prob. 33SAECh. 16 - Prob. 34SAECh. 16 - Prob. 35SAECh. 16 - What is the indifferent stage of embryonic...Ch. 16 - Prob. 37SAECh. 16 - 38. Compare the effects of aging on the male and...Ch. 16 - Prob. 39CTCh. 16 - Crystal had both her left ovary and her right...Ch. 16 - 41. A sperm enters a polar body, and their nuclei...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following statements does NOT correctly describe the events following fertilization? Select one: a. Only the inner cell mass cells in a blastocyst are pluripotent. b. The trophoblast has an important role in maintaining the pregnancy, as it prevents the endometrium from shedding. c. As hCG takes over maintaining the endometrium immediately after implantation, the corpus luteum degenerates into the corpus albican. d. All 16 cells in a morula are truly totipotent, meaning that they can become any cells in the human body.arrow_forwardNutrient 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_forwardAll of the following changes take place during the last trimester of pregnancy EXCEPT- a, the cerebral cortex develops b. the baby reaches the age of viability c. the fetus gains weight d. the blastocyst implants to the lining of the uterusarrow_forward
- The feature that distinguishes a fetus from an embryo is that the fetus has a. All of the organ systems. b. Three germ layers. c. A placenta. d. An amnion. e. Arm and leg buds.arrow_forwardIdentify 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_forwardGastrulation does NOT Select one: a. involve the formation of germ layers b. consist of endoderm, mesoderm, and ectoderm c. result in the formation of a third layer in the embryonic disk d. include the differentiation of cells into tissues and organsarrow_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 which of the following would the focus of classes be mainly on physiologic changes, fetal development, sexuality, during pregnancy, and nutrition? * A. Prepregnant period B. First trimester C. Second trimester O D. Third trimester Oarrow_forwardThe placenta functions to Select one: a. produce blood cells b. create amniotic fluid c. provide nutrition for the growing fetus d. exchange nutrients and wastesarrow_forward
- The placenta function to Select one: A. Produce blood cells B. Provide nutrition for the growing fetus C. Exchange nutrients and wastes D. Creat amniotic fluidarrow_forwardWhat controls whether an embryo will develop testes or ovaries?a. pituitary glandb. hypothalamusc. Y chromosomed. presence or absence of estrogenarrow_forwardThe outer layer of the blastocyst that attaches to the wall of the uterus at implantation is called the a. amnion. b. yolk sac. c. cembryoblast. d. trophoblast.arrow_forward
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Embryology | Fertilization, Cleavage, Blastulation; Author: Ninja Nerd;https://www.youtube.com/watch?v=8-KF0rnhKTU;License: Standard YouTube License, CC-BY