BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 38, Problem 10SA
Put these human developmental events in order, from earliest to latest
| a. blastocyst forms | d. implantation |
| b. heart begins beating | e. breathing practice begins |
| c. gastrulation | f. neural tube forms |
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The inner cell mass of a human blastocysta. gives rise to the chorion.b. gives rise to the placenta.c. gives rise to the embryo.d. consists of highly differentiated cells.
From which of the following is the embryo developed?
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All of the following are true about humans EXCEPT:
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Chapter 38 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 38 - Prob. 1SACh. 38 - Prob. 2SACh. 38 - Testosterone is secreted by the _______. a. testes...Ch. 38 - Prob. 4SACh. 38 - Prob. 5SACh. 38 - Prob. 6SACh. 38 - Match each term with the most suitable...Ch. 38 - Prob. 8SACh. 38 - A human blastocyst normally implants in...Ch. 38 - Put these human developmental events in order,...
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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
- 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_forwardThe beginning of brain and spinal cord formation is termeda. cephalocaudal folding.b. organogenesis.c. neurulation.d. gastrulation.arrow_forward. 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.arrow_forward
- What is NOT true about embryo development? A. a morula is an earlier stage than a gastrula B. Gatrulation creates endoderm and ectoderm in most animals C. Mammal blastulas are called blastocysts due to the thickened area where the embryo develops D. diploblastic animals have mesodermarrow_forwardAt which embryonic event would one be able to first distinguish whether an embryo is diploblastic or triploblastic? A)cleavage B)metamorphosis C)fertilization D)gastrulation E)organogenesisarrow_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_forward
- The zona pellucida is important in mammals because it... a. induces polyspermy. b. induces compaction. c. inhibits implantation of the embryo until the embryo reaches the uterus. d. inhibits the formation of twins.arrow_forwardWhich developmental stage is mismatched? a. second week—implantation b. third week—heart development begins c. fourth and fifth week—limb buds appear d. sixth through eighth week—all organ systems present e. None of these stages are mismatched.arrow_forwardEndoderm, Mesoderm, and Ectoderm are formed during ________. a. Gametogenesis b. Cleavage c. Gastrulation d. Organogenesisarrow_forward
- Which of the following statements is incorrect?a. The placenta secretes hormones such as progesterone, hCG, and estrogen.b. Embryonic tissue and maternal tissue forms the placenta.c. The chorion supplies nutrients to the embryo by diffusion.d. The umbilical cord is formed by one artery and two veinsarrow_forwardAt which of the following stages of development is a frog embryo composed of the most cells? Group of answer choices A. blastula B. neural tube stage C. gastrula D. zygote (fertilized egg)arrow_forwardThe process forming the neural tube and plate via the intercalation of cells along the medial-lateral axis and extension along the anterior-posterior axis occurs is called? a. neurulation b. embryogenesis c. convergent extension d. morphogenesisarrow_forward
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