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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In embryos with spiral cleavage the 4d cell gives rise to which germ layer_______________________________.
Group of answer choices
endoderm
gastroderm
mesoderm
ectoderm
epiderm
In a femal human, the oogonium forms when the female is a _______________. This happens _________________. At puberty some of the primary oocytes continue meiosis. Each menstrual cycle a few will continue development. They will only go to __________________. of meiosis and stop unless fertilization occurs.
Some Stages of Embryonic Development
Gastrulation
Zygote
Implantation
Blastocyst
The order in which the physiological stages occur during embryonic development is Answer, Answer, Answer, and Answer.
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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- The first “milk” the mother produces is called ______________. After an egg is fertilised it is called a _____________. The ______________ cells of the blastocyst will take part in placental formation.arrow_forwardThe chorion is the _____ and the amnion is the _____.arrow_forwardMake a flowchart to show early embryonic development in humans. Start with the zygotearrow_forward
- Milk production in the mammary glands is stimulated by a hormone from the pituitary gland called_______ .Another hormone,_______ , stimulates contraction of both the uterine muscles during childbirth and the muscles around the mammary glands that cause milk to be ejected from the glands.arrow_forwardPlace 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_forwardFigure 18.17 Which of the following statements about hormone regulation of the female reproductive cycle is false? a. LH and FSH are produced in the pituitary, and estrogen and progesterone are produced in the ovaries. b. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. c. Both progesterone and estrogen are produced by the follicles. d. Secretion of GnRH by the hypothalamus is inhibited by low levels of estrogen but stimulated by high levels of estrogen.arrow_forward
- 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 formsarrow_forwardFigure 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_forwardUse the following information to answer the next question. In order to initiate in vitro fertilization, a woman must undergo hormonal therapy to release numerous mature eggs and to prepare the uterine lining. The eggs are removed using a laparoscope and fertilized in a petri dish. The developing embryos are inserted back into the woman for implantation to take place. 13. What hormone changes would cause a female to develop and release a large number of mature eggs? A. Increased FSH and LH B. Decreased FSH and LH C. Increased estrogen and progesterone Decreased estrogen and progesterone D.arrow_forward
- When the embryo is implanted, what developmental stage this be? cleavage fetus blastula gastrulaarrow_forwardThe ______ carries food and water to the developing zygote.arrow_forwardWhich of the following is the latest stage of embryonic development (of this list)? blastula morula zygote 8 cell stage gastrulaarrow_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