LooseLeaf for Human Anatomy
5th Edition
ISBN: 9781259285271
Author: Michael McKinley Dr., Valerie O'Loughlin, Elizabeth Pennefather-O'Brien
Publisher: McGraw-Hill Education
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Question
Chapter 3, Problem 5MC
Summary Introduction
Introduction:
Gastrulation is the process of formation of three germ layers in the embryo. The process of gastrulation phase starts at the pre-embryonic development.
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During gastrulation, cells from the _____ layer of the bilaminar germinal disc migrate and form the three primary germ layers. a. notochord b. hypoblast c. epiblast d. mesoblast
The cells of the embryoblast differentiate into the ______ andthe ______.a. epiblast, hypoblastb. cytotrophoblast, syncytiotrophoblastc. amnioblast, epiblastd. epiblast, cytotrophoblast
Match the germ layer on the right with its contribution to the tissues and organs of the embryo, on the left.
v connective tissue stroma
A. mesoderm
v parenchymal cells, e.g., liver
B. ectoderm
C. mesoderm
D. mesoderm
E. endoderm
F. endoderm
vasculature
v innervation
v epithelium of enteric secretory duct tubes
v epithelium of integumentary system
G. ectoderm
v elastic membrane
Chapter 3 Solutions
LooseLeaf for Human Anatomy
Ch. 3 - What are two ways in which meiosis differs from...Ch. 3 - What is crossing over, and during what phase of...Ch. 3 - Prob. 3WYLCh. 3 - Prob. 4WYLCh. 3 - How is a secondary oocyte different from an ovum?Ch. 3 - Prob. 6WYLCh. 3 - What is the name of the core of cells at one end...Ch. 3 - Prob. 8WYLCh. 3 - Prob. 9WYLCh. 3 - What structure induces the process of neurulation?
Ch. 3 - Prob. 11WYLCh. 3 - What structures in the embryo are derived from the...Ch. 3 - Prob. 13WYLCh. 3 - Prob. 14WYLCh. 3 - Match each numbered item with the most closely...Ch. 3 - Prob. 1MCCh. 3 - The outer layer of the blastocyst that attaches to...Ch. 3 - Prob. 3MCCh. 3 - Somites develop from. a. paraxial mesoderm b....Ch. 3 - Prob. 5MCCh. 3 - An abnormal number of chromosomes in a cell...Ch. 3 - Prob. 7MCCh. 3 - Which of the following is not an extraembryonic...Ch. 3 - Prob. 9MCCh. 3 - The beginning of brain and spinal cord formation...Ch. 3 - Briefly describe the process of meiosis,...Ch. 3 - Prob. 2CRCh. 3 - Prob. 3CRCh. 3 - Prob. 4CRCh. 3 - What important event occurs with the formation of...Ch. 3 - Prob. 6CRCh. 3 - Prob. 7CRCh. 3 - Prob. 8CRCh. 3 - Prob. 9CRCh. 3 - Prob. 10CRCh. 3 - Jennifer is a 37-year-old woman who is just over 3...Ch. 3 - In the late 1960s, a number of pregnant women in...Ch. 3 - Prob. 3DCR
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- Which of the following structures develops into only the fetus? a. Inner cell mass b. Trophoblast c. Blastocyst d. Zygotearrow_forwardThe folding of ectoderm on the top of the embryo during organogenesis produces...? Group of answer choices a. somites b. the archenteron c. the neural tube d. the gastrula e. the blastulaarrow_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
- Gastrulation... A. Is a specialized form of cell division that partitions the cytoplasm of a fertilized egg B. Refers to the fusion of haploid gametes to give a diploid zygote C. Produces an embryo with either two or three distinct cell layers D. Is a developmental stage consisting of a cell layer surrounding a fluid-filled space E. None of the abovearrow_forwardA gastrulation does NOT Select one: A. Consist of endoderm, mesoderm, and ectoderm B. Result in the formation of a third layer in the embryonic disc C. Involve the formnation of germ layers D. Include the differentiation of cells into tissues and organsarrow_forwardSomites a. begin forming at the tail end of the embryo and then move forward in a wavelike fashion. b. are derived from endoderm. c. develop into only one type of tissue per somite. d. may vary in number from one species to the next.arrow_forward
- 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 Stagearrow_forwardMeroblastic cleavage is typical of embryos formed from _______________ eggs. (a) moderately telolecithal (b) highly telolecithal (c) isolecithal (d) b and c (e) a, b, and carrow_forwardWhich of the following are derived from 'trophoblasts'? 1. epiblast 2. hypoblast 3. amnion 4. blastocyst wall 5. inner cell mass Group of answer choices (A) 1 and 2 (B) 1, 2, and 3 (C) 3 and 4 (D) 4 only (E) 1, 2, 3, and 5arrow_forward
- During gastrulation, three germ layers form. All the cells, tissues, and organs in the body come from these germ layers. Match each germ layer to the system, organ, or structure it will form. 1. endoderm 2. mesoderm 3. ectoderm Liver Brain Heart Skinarrow_forwardWhat are the correct pairings of developing and embryonic structures in the gastrulation of chickens? a. Epiblast- ectoderm c. Primary hypoblast-endoderm Read the following statements CAREFULLY: I. II. III. IV. b. Secondary hypoblast - endoderm d. Migrating cells - mesoderm The germ band needs to retract for fruit fly segments to develop properly. The formation of the sea urchin archenteron is made possible by epithelial cells that underwent epithelial-to-mesenchymal transition. Frog gastrulation involves the epiboly of endoderm cells. Chicken endoderm and mesoderm is formed through the migration of cells through both the anterior and posterior end of the primitive streak. a. All choices are true b. I & Il are true but IV is false d. IV is sometimes true c. Ill is falsearrow_forwardWhich of the following stages of the fertilization process stimulates completion of meiosis II in the oocyte’s nucleus? A. The sperm nucleus and egg nucleus combine to form the genetic material of the zygote B. Sperm release enzymes to digest the protein layer of the secondary oocyte C. The entry of a sperm into the secondary oocyte D. The swimming of sperm from the vagina, through the uterus, and up to an oviductarrow_forward
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