Human Anatomy (9th Edition)
9th Edition
ISBN: 9780134320762
Author: Frederic H. Martini, Robert B. Tallitsch, Judi L. Nath
Publisher: PEARSON
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Textbook Question
Chapter 28, Problem 19RFT
The extra-embryonic membrane that forms the urinary bladder is the
(a) yolk sac.
(b) allantois.
(c) amnion.
(d) chorion.
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The outer layer of the blastocyst, which attaches to the uterine wall, is the (a) yolk sac, (b) trophoblast, (c) amnion, (d) inner cell mass.
The epiblast forms (a) only the ectoderm, (b) the yolk sac, (c) only the mesoderm and ectoderm, (d) all three primary germ layers.
The primary germ layer that forms the trunk muscles, heart, and skeleton is (a) ectoderm, (b) endoderm, (c) mesoderm.
Chapter 28 Solutions
Human Anatomy (9th Edition)
Ch. 28 - Match each numbered item with the most closely...Ch. 28 - Prob. 2RFTCh. 28 - Prob. 3RFTCh. 28 - Prob. 4RFTCh. 28 - Prob. 5RFTCh. 28 - Prob. 6RFTCh. 28 - Prob. 7RFTCh. 28 - Prob. 8RFTCh. 28 - Match each numbered item with the most closely...Ch. 28 - Prob. 10RFT
Ch. 28 - Identify the two extra-embryonic membranes and the...Ch. 28 - Prob. 12RFTCh. 28 - Prob. 13RFTCh. 28 - Prob. 14RFTCh. 28 - 15. A blastocyst is a(n)
(a) extra-embryonic...Ch. 28 - During the second trimester, the most significant...Ch. 28 - Prob. 17RFTCh. 28 - Prob. 18RFTCh. 28 - The extra-embryonic membrane that forms the...Ch. 28 - During implantation, the (a) syncytiotrophoblast...Ch. 28 - 1. What would be the fate of an embryo if the...Ch. 28 - Prob. 2RCCh. 28 - 3. The stage of development that follows cleavage...Ch. 28 - Prob. 4RCCh. 28 - Prob. 5RCCh. 28 - Describe the effects of human chorionic...Ch. 28 - 7. What occurs during amphimixis?
Ch. 28 - Prob. 8RCCh. 28 - Prob. 9RCCh. 28 - Prob. 10RCCh. 28 - 1. Joe and Jane desperately want to have children,...Ch. 28 - 2. The virus that causes rubella, or "German...
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- The archenteron develops into(A) the mesoderm.(B) the endoderm.(C) the placenta.(D) the lumen of the digestive tract.arrow_forwardThe gradual modification of anatomical structures during the period from conception to maturity is, (a) development. (b) differentiation. (c) embryogenesis. (d) capacitation.arrow_forwardWhich of the following consists of both fetal and maternal tissues? (a)umbilical cord (b) placenta (c) amnion (d) allantois (e) yolk sacarrow_forward
- Which of the following events does not take place when a fetus is 17 to 20 weeks old? (a) fetal movements quicken, (b) testes descend to the scrotum, (c) silklike hair covers the skin, (d) sweat glands form.arrow_forwardThe zygote arrives in the uterine cavity as a, (a) morula. (c) lacuna. (b) trophoblast. (d) blastomere.arrow_forwardIn the sentence "The placenta performs an important function for the fetus," what does the word function mean? (A) position (B) organ (C) result (D) purposearrow_forward
- During human gestation, rudiments of all organs develop (A) in the first trimester. (B) in the second trimester. (C) in the third trimester. (D) during the blastocyst stage.arrow_forwardOvum production, or oogenesis, begins, (a) before birth. (b) after birth. (c) at puberty. (d) after pubertyarrow_forwardGastrulation is the (a) formation of three germ layers by the epiblast at the primitive streak, (b) formation of the placenta, (c) same as cleavage, (d) folding of the gut into a tube during week 4.arrow_forward
- Placenta ... a) ... develops from trophoblast cells. b) ... develops from embryoblast cells. c) ... allows the blood of the mother and fetus to be mixedarrow_forwardIf an egg cell were treated with EDTA, a chemical that bindscalcium and magnesium ions,(A) the acrosomal reaction would be blocked.(B) the fusion of sperm and egg nuclei would be blocked.(C) the fast block to polyspermy would not occur.(D) the fertilization envelope would not form.arrow_forwardWhich of the following primary germ layers nervous tissue develops from? a ) yolk sac b) endoderm d) amnin e) ectodermarrow_forward
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