EBK BIOLOGY
6th Edition
ISBN: 9780134819075
Author: Maier
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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Chapter 23, Problem 6LTB
Summary Introduction
Introduction:
The early embryo differentiates into a structure called the gastrula, which is composed of three-layers, i.e. ectoderm, mesoderm, and endoderm. The process of differentiating into the three-layered structure is called gastrulation.
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Endoderm
Mesoderm
Ectoderm
Match the structures below with the correct germ layers listed above that they are formed from.
Number:
Answer
Answer
Answer
Answer
Tissues and Organs:
Central Nervous System
Lining of the Digestive Tract
Skin
Skeleton
From which of the following is the embryo developed?
Trophoblasts
Inner cell mass
Blastocoelen
The yellow sacks
Among the germ layers and developmental structures below: What is/are the FORMED ANATOMICAL ORGAN/PART (of the infant)? Indicate if it disappears or dissolved in the process of development.
•amniotic cavity
•blastula
•cleavage
•ectoderm
•embryoblast
•embryonic disc
•endoderm
•epiblast
•fertilization
•gametes
•gastrulation
•hypoblast
•intermediate mesoderm
•lateral plate mesoderm
•mesoderm
•morula
•neural crest cells
•neurulation
•notochord
•occipital somites
•paraxial mesoderm
•primitive node
•primitive streak
•trophoblast
•yolk sac
Chapter 23 Solutions
EBK BIOLOGY
Ch. 23 - Why can two cells with the same DNA have different...Ch. 23 - Prob. 2LTBCh. 23 - Add labels to the figure that follows, which...Ch. 23 - Prob. 4LTBCh. 23 - Prob. 5LTBCh. 23 - Prob. 6LTBCh. 23 - Which hormone helps prepare the uterus for...Ch. 23 - Prob. 8LTBCh. 23 - Prob. 9LTBCh. 23 - Prob. 10LTB
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- Figure 29.22 Which of the following statements about the parts of an amniotic egg are false? The allantois stores nitrogenous waste and facilitates respiration. The chorion facilitates gas exchange. The yolk provides food for the growing embryo. The amniotic cavity is filled with albumen.arrow_forwardWhich of the following gives rise to the skin cells? a. ectoderm b. endoderm c. mesoderm d. none of the abovearrow_forwardMatch each developmental stage with its description.arrow_forward
- Which of the following are mismatched? (a) endoderm; lining of the digestive tube (b) ectoderm; circulatory system (c) mesoderm; notochord (d) mesoderm; reproductive system (e) ectoderm; sense organsarrow_forwardWhich statement does NOT accurately describe somites? series of tissue blocks form the ribs and intercostal muscles paired structures running along either side of the neural tube derived from neural crest tissue on the ventral surface of the embryoarrow_forwardComplete the following table with the functions of each of the embryonic membranes: Embryonic Membrane Function Yolk sac Chorion & Chorionic villi Allantois Amnionarrow_forward
- Complete the following table with the organs/systems that arise from each of the germ layers Germ Layer Fate Ectoderm Endoderm Mesodermarrow_forwardWhy isn't the answer epiblast and hypoblast? Doesn't the entirety of the inner cell mass contribute to cells forming the embryo?arrow_forwardDuring 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_forward
- Name two structures derived from each of the three embryonic tissue layers: endoderm, ectoderm, and mesoderm.arrow_forwardAt which embryonic event would one be able to first distinguish a diploblastic embryo from a triploblastic embryo? O gastrulation organogenesis O cleavage O metamorphosis O fertilizationarrow_forwardAfter fertization occurs what is the fertilized cell calledarrow_forward
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