Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 42, Problem 15SQ
Summary Introduction
To number: The events in human development in the correct order.
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During morphogenesis, gastrulation does which of the following?A. Gastrulation produces the ectoderm through formation of a blastocyst.B. Gastrulation produces the mesoderm to form the lining of the digestive tract.C. Gastrulation provides the mechanisms whereby cells can form the neural tube.D. Gastrulation produces the endoderm through invagination of the blastula.
Which of the following statements is false?
a. Cadherins, but not integrins play a role in gastrulation.
b. Gastrulation creates the primary germ layers
c. Gastrulation requires cells to change their gene expression.
d. Body axes are stabilized (made permanent) during gastrulation.
Place the number corresponding to the correct germ layer in the blank.
____ Mesoderm
____ Ectoderm
____ Endoderm
Chapter 42 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 42 - The end product of cleavage is a __________. a....Ch. 42 - The outermost germ layer in a vertebrate gastrula...Ch. 42 - Prob. 3SQCh. 42 - Match each term with the most suitable...Ch. 42 - In humans, fertilization typically occurs in the...Ch. 42 - The ________, a fluid-filled sac, surrounds and...Ch. 42 - Prob. 1DAACh. 42 - Prob. 2DAACh. 42 - Prob. 3DAACh. 42 - Birth Defects and Multiple Births A woman who...
Ch. 42 - The placenta consists of __________. a. embryonic...Ch. 42 - During the fetal period, ____________. a....Ch. 42 - Prob. 9SQCh. 42 - Match each hormone with its action(s). ______...Ch. 42 - Prob. 11SQCh. 42 - Prob. 12SQCh. 42 - Prob. 13SQCh. 42 - Prob. 14SQCh. 42 - Prob. 15SQCh. 42 - The rubella virus causes German measles. If a...Ch. 42 - Prob. 2CTCh. 42 - Prob. 3CT
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- Place these events in human development in the correct order. ____ 1 a. gastrulation is completed ____ 2 b. blastocyst forms ____ 3 c. tail is reabsorbed ____ 4 d. implantation occurs ____ 5 e. zygote forms ____ 6 f. neural tube forms ____ 7 g. maternal cervix softensarrow_forwardAll of the following are true about humans EXCEPT: A. our zygote and early embryo cells have indeterminate cleavage B. Our blastopore becomes our mouth C. We are eumetazoan triploblastic bilateral deuterostomes D. our early embryo cells are sort of radially arranged but with rotational cleavagearrow_forwardIn humans, implantation in the uterus occurs at whichstage of embryonic development?a. zygoteb. morulac. blastocystd. gastrulationarrow_forward
- Number these steps in vertebrate embryogenesis in order. ______ formation of archenteron ______ formation of blastula ______ neurulation ______ gastrulation ______ cleavage ______ zygotearrow_forwardGive the function/purpose of the following terms: germ layers ectoderm mesoderm endoderm blastocyst yolk sacarrow_forwardWhat are the correct pairings of developing and embryonic structures in the gastrulation of chickens? Multiple answers is possible. If no correct option is given write the proper pairings. a. Epiblast – ectoderm b. Secondary hypoblast – endoderm c. Primary hypoblast – endoderm d. Migrating cells - mesodermarrow_forward
- Which of the following structure develops into only the fetus? A. Blastocyte B. Zygote C. Trophoblast D. Inner cell massarrow_forwardWhen the embryo is implanted, what developmental stage this be? cleavage fetus blastula gastrulaarrow_forwardMatch the human development with the week or month of development. Question 30 options: skull, fingers, toes and etc. forms (heart beat is loud) active movement; responsive to sound/light/touch head, torso, arms, legs and reflex actions fully formed and ready to get out! organ systems develop head and tail formed (heart forms) implanation and gastrulation 1. second week 2. third week 3. fouth-fifth week 4. sixth-eight week 5. third-fourth month 6. fifth-seven month 7. eighth-ninth montharrow_forward
- Examine whether the statement "Because of the many later developmental transformations that produce the elaborately structured organs, the body plan set up during gastrulation bears little resemblance to the body plan in the adult is true or false.arrow_forwardThe beginning of brain and spinal cord formation is termeda. cephalocaudal folding.b. organogenesis.c. neurulation.d. gastrulation.arrow_forwardWhether the statement "Because of the many later developmental transformations that produce the elaborately structured organs, the body plan set up during gastrulation bears little resemblance to the body plan in the adult" is true or false.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