EBK HUMAN ANATOMY
9th Edition
ISBN: 9780135241752
Author: Marieb
Publisher: PEARSON CO
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Textbook Question
Chapter 3, Problem 16RQ
The fetal period is (a) the �rst 8 weeks of development, (b) the time of rapid growth of body organs and cell differentiation, (C) the period most susceptible to teratogens, (d) the period when gastrulation occurs, (e) the time when neural tube defects can occur.
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Chapter 3 Solutions
EBK HUMAN ANATOMY
Ch. 3 - Dining which prenatal period is the basic body...Ch. 3 - Which abdominal structures form from the inner...Ch. 3 - Using directional terms (Table 1.1), describe the...Ch. 3 - Describe gastrulation. During which week of...Ch. 3 - What structure induces the formation of the neural...Ch. 3 - Which type or types of mesoderm Cluster into...Ch. 3 - After folding takes place, which embryonic germ...Ch. 3 - Does endoderm form the inner Iining of the inner...Ch. 3 - Which part of the somite forms the vertebrae and...Ch. 3 - What does the splanchnic lateral plate mesoderm...
Ch. 3 - A birth defect in the heart is caused by a...Ch. 3 - Why is respiratory distress common in babies born...Ch. 3 - 1ndicate whether each of the following relates to...Ch. 3 - The outer layer of the blastocyst, which attaches...Ch. 3 - Most birth defects can be traced to disruption of...Ch. 3 - The primary germ layer that forms the trunk...Ch. 3 - Each embryonic structure in column B with its...Ch. 3 - Match each date in column B [approximate time...Ch. 3 - It is currently possible to save some premature...Ch. 3 - Somites are evidence of (a) a structure from...Ch. 3 - Which of the following embryonic structures are...Ch. 3 - Prob. 10RQCh. 3 - When it is 1.5 months old, an average embryo is...Ch. 3 - Gastrulation is the (a) formation of three germ...Ch. 3 - The epiblast forms (a) only the ectoderm, (b) the...Ch. 3 - The limbs develop during the (a) start of the...Ch. 3 - The notochord develops primarily from (a)...Ch. 3 - The fetal period is (a) the �rst 8 weeks of...Ch. 3 - What important event occurs at the primitive...Ch. 3 - What is the function of the amniotic sac and the...Ch. 3 - (a) What is mesenchyme? (b) How does it differ...Ch. 3 - Explain how the flat embryonic disc takes on the...Ch. 3 - In anatomy lab, Thaya pointed to the vertebrae of...Ch. 3 - Neural crest is the one embryonic tissue that is...Ch. 3 - Many embryonic events �rst occur cranially, then...Ch. 3 - Prob. 24RQCh. 3 - Differentiate the outer tube from the inner tube....Ch. 3 - Before Delta studied embryology in her anatomy...Ch. 3 - A friend in your dormitory, a freshman, tells you...Ch. 3 - Insufficient folic acid in the early weeks of...Ch. 3 - Your cat finds a large ball of string and starts...Ch. 3 - When is the earliest time the sex of a fetus can...
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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
- Most birth defects can be traced to disruption of the developmental events during this part of the prenatal period: (a) first 2 weeks, (b) second half of month 1 and all of month 2, (c) month 3, (d) end of month 4, (e) months 8 and 9.arrow_forwardAfter birth, there is production and secretion of milk from the mother'smammary glands.a) Discuss the similarities and differences observed in the stages ofdevelopment of the adult breast tissue, specifically from the nonpregnant, to the pregnant and finally to the lactating stage.b) Why is it normally only after birth that lactogenesis occurs?arrow_forwardIn females, meiosis is not completed (a) until birth. (b) until puberty. (c) until fertilization occurs. (d) until ovulation occurs.arrow_forward
- A 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_forwardThe myometrium is the muscular layer of the uterus, and the endometrium is the (a) serosa, (b) adventitia, (c) submucosa, (d) mucosa.arrow_forwardThe part of the endometrium that undergoes cyclical changes in response to variations in sex hormone levels is the, (a) serosa. (b) basal layer. (c) muscular myometrium. (d) functional layer.arrow_forward
- The epiblast forms (a) only the ectoderm, (b) the yolk sac, (c) only the mesoderm and ectoderm, (d) all three primary germ layers.arrow_forwardA 17-week fetus is developing normally. She has age-appropriate extemal female genitalia and a developing uterus, vagina, and talopan tubes. Which of the blowing is the most kay explanation for this normal developmental process? OA) Absence of functional fetal testicular tissue B) Migration of primordial germ cells OC) Presence of functional fetal ovarian tissue OD) Presence of maternal estrogen E) Presence of primary sex cordsarrow_forwardTell the difference (if any) between each of the following pairs of sound-alike terms: (a) sperm and spermatocyte, (b) epididymis and duct of epididymis, (c) ovarian ligament and suspensory ligament of the ovary, (d) vulva and vestibule, (e) spermatogenesis and spermiogenesis.arrow_forward
- a) Describe the process of neuralation. b) Identify the germ layer from which the nervous system forms. c) Describe when in development neuralation occurs. d) Identify a teratogen that could affect the development of the brain during this stage of pregnancy.arrow_forwardAt 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_forwardThe hormones that stimulate the ovarian cycle are secreted by the _____________; the hormones that stimulate the uterine cycle are secreted by the _____________ (a) ovary / uterus, (b) pituitary gland / ovary, (c) follicle cells / functional layer, (d) interstitial cells / placenta, (e) ovary / pituitary gland.arrow_forward
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