Human Anatomy
9th Edition
ISBN: 9780135168059
Author: Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon
Publisher: Pearson Education, Inc.,
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Textbook Question
Chapter 3, Problem 15RQ
The notochord develops primarily from (a) ectoderm, (b) neural crest, (c)
mesoderm, (d) endoderm.
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In Deuterostomes, nutrient molecules (monomers) are taken in to the space between the endoderm and the ectoderm because... A) The ectoderm makes protein for movement B) The endoderm cells release hydrolytic enzymes that act on polymers C) The endoderm releases enzymes that conduct dehydration synthesis of proteins D) mRNA polymerase causes hydrolysis of DNA E) All are correct
Explain why
The cnidaria, jelly fish, are the first organisms to exhibit? a) an ectoderm layer b) endoderm layer with digestive cells that release enzymes in to a digestive structure c) ectoderm cells that specialize to become cells which react to a stimulus and produce movement d) a water-based internal environment (prebiotic ocean) between the ectoderm and the endoderm e) all are true for cnidaria
1. In Deuterostomes, nutrient molecules (monomers) are taken into the space between the endoderm and the ectoderm because a) the ectoderm makes protein for movement, b) the endoderm cells release hydrolytic enzymes that act on polymers, c) the endoderm releases enzymes that carry out dehydration synthesis of proteins. d) mRNA polymerase causes transcription. e) all are correct.
2.The Amoeba cell exhibits specialized abilities that enable it to react to a stimulus by producing a response or a behavior. It can do this because it has adapted properties exhibited by simpler more primitive cells. These cellular properties include a) Separation of the fluid environments inside and outside the cell. b) Active transport of Na+ out of and K+ into the cell, c) diffusion of Na+ in to and K+ out of a cell in reaction to a stimulus, d) the stimulus interacting with a receptor site in a membrane embedded protein, e) All of these are true.
Chapter 3 Solutions
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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- The muscular system develops from which embryonic germ layer? a) Ectoderm B) Mesoderm D) Endodermarrow_forwardSomites are evidence of (a) a structure from ectoderm, (b) a structure from endoderm, (c) a structure from lateral plate mesoderm, (d) segmentation in the human body.arrow_forwardIn the cnidaria the ectoderm cells are important because they can react to a stimulus (light) from the environment by exhibiting a response from their muscle cell as a directed movement. To do this ectoderm cells .... A) Are the first specialized digestive cells B) Are neurocytes that have membrane receptors which react to light C) Are prokaryotic cells D) Form the first digestive organ E) Are the only cells with the Na+/k+ pumps explain why 0arrow_forward
- Which of the following is an embryonic tissue found in animals? a) The blastopore b) The blastocoele c) The endoderm d) The coelom e) The echinodermarrow_forwardwhich germ layer (tissue) gives rice to our nervous system and outer coverings. a) endotherm b) ectoderm c) mesoderm d) endodermarrow_forwardIn the deuterostomes the digestive tract (Gut) forms from the cells of the a) ectoderm b) nerve net of the Cnidarians c) endoderm d) connective tissue e) mesoderm I know its choice C but please explain howarrow_forward
- All of the cell types of an adult vertebrate develop from three primary embryonic germ cell layers, e.g. skin epithelium originates from ____ and intestinal epithelium from ____. A)ectoderm, endoderm B)ectoderm; ectoderm C)endoderm; endoderm D)endoderm; ectodermarrow_forwardThe outermost (most superficial) extra embryonic membrane is____ a ) Allantois b ) Amnion d ) Ectoderm e ) Chorionarrow_forwardThe cortical reaction of sea urchin eggs functionsdirectly in(A) the formation of a fertilization envelope.(B) the production of a fast block to polyspermy.(C) the generation of an electrical impulse bythe egg.(D) the fusion of egg and sperm nucleiarrow_forward
- At 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_forwardDivision of human egg is a) Holoblastic and equal b) Holoblastic and unequal c) Isoblastic d) Meroblasticarrow_forwardDistinguish between (a) radial and bilateral symmetry; (b) blastula andgastrula; (c) direct and indirect development; (d) complete andincomplete digestive tracts; (e) coelom and pseudocoelom.arrow_forward
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