Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159363
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: McGraw-Hill Publishing Co.
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Textbook Question
Chapter 61, Problem 4PL
The placenta is comprised of
a. only the myometrium.
b. only the decidua basalis.
c. only the chorionic villi.
d. combinations of the decidua basalis and chorionic villi.
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Which row correctly identifies the function and source of hCG, respectively?
Select one:
a.
Function
Source
Stimulates FSH
Anterior pituitary
b.
Function
Source
Aids implantation
Uterus
c.
Function
Source
Maintains corpus luteum
Trophoblast and placenta
d.
Function
Source
Stimulates estrogen
Ovary
The outer layer of the blastocyst that attaches to the wall of the uterus at implantation is called the a. amnion. b. yolk sac. c. cembryoblast. d. trophoblast.
Fertilization of the secondary oocyte normally occurs in thea. ovary.b. uterine tube.c. uterus.d. vagina
Chapter 61 Solutions
Laboratory Manual For Human Anatomy & Physiology
Ch. 61 - The ovum and sperm unite and form a diploid cell...Ch. 61 - The ________ is the development stage that...Ch. 61 - Which of the following is not an extraembryonic...Ch. 61 - The placenta is comprised of a. only the...Ch. 61 - The embryonic stage of human development exists a....Ch. 61 - The zonapellucida gel layer surrounds the...Ch. 61 - A single completed oogenesis sequence produces...Ch. 61 - A single completed spermatogenesis sequence...Ch. 61 - Human gametes Contain ______________ chromosomes.Ch. 61 - The diploid number of human chromosomes found in...
Ch. 61 - To create genetic variation, ______________...Ch. 61 - To create genetic variation, ______________...Ch. 61 - The cell resulting from fertilization is called...Ch. 61 - Tiny cells that form during meiotic divisions of...Ch. 61 - Fertilization and early embryonic development...Ch. 61 - A solid ball of about sixteen cells is called a...Ch. 61 - The part of meiosis that is most similar to...Ch. 61 - Meiosis I reduces the chromosome number in half,...Ch. 61 - Implantation of the ____________ into the...Ch. 61 - The two-cell, four-cell, eight-cell, and morula...Ch. 61 - Match the terms in column A with the descriptions...Ch. 61 - Summarize your observations of any similarities...
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- Nutrient and waste requirements for the developing fetus are handled during the first few weeks by _____. a. the placenta b. diffusion through the endometrium c. the chorion d. the blastocystarrow_forwardThe ampulla of the uterine tubea. is the opening of the uterine tube into the uterus.b. has long, thin projections called the ostium.c. is connected to the isthmus of the uterine tube.d. is lined with simple cuboidal epithelium.arrow_forwardDuring the first trimester, hCG produced from the chorion maintains the corpus luteum. What is the purpose of maintaining the corpus luteum? Select one: a. The corpus luteum produces relaxin, which thickens the endometrium. b. The corpus luteum ensures that the endometrium does not break down during the first trimester. c. The corpus luteum supports the formation of the placenta. d. The chorion forms the fetal part of the placenta, and the corpus luteum supports the maternal part of the placenta.arrow_forward
- The cause of menses in the uterine cycle appears to bea. increased progesterone secretion from the ovary, which producesblood clotting.b. increased estrogen secretion from the ovary, which stimulates themuscles of the uterus to contract.c. decreased progesterone secretion by the ovary.d. decreased production of oxytocin, causing the muscles of the uterusto relaxarrow_forwardWhich row correctly identifies the function and a source of hCG, respectively? Select one: A. Function Source Stimulate Estrogen Ovary B. Function Source Stimulate FSH Anterior Pituitary C. Function Source Aid Implantation Uterus D. Function Source Maintains Corpus Luteum Trophoblast and Placentaarrow_forwardA woman has been diagnosed with a ruptured ectopic pregnancy. Which of the following signs/symptoms is characteristic of this diagnosis? A. Dark brown rectal bleeding. B. Severe nausea and vomiting. C. Sudden lower quadrant pain earlier in the pregnancy. D. Marked hyperthermia.arrow_forward
- A. fundus B. cervix C. endometrium D. myometrium E. perimetrium Question1. the lining of the uterus Question2. the opening at the bottom of the uterus Question3. the outer layer of the uterus Question4. the middle layer of the uterus Question5. the bulging, round, upper part of the uterusarrow_forwardForms the muscles A. Prostate gland B. Mesoderm C. The inner cell mass D. Bulbourethral glands E. Seminal vesiclesarrow_forwardThe onset of labor may be a result ofa. increased estrogen secretion by the placenta.b. increased glucocorticoid secretion by the fetus.c. increased secretion of oxytocin.d. stretch of the uterus.e. All of these are correctarrow_forward
- 1. A placenta vera is formed if a.The placenta is removed during birth. b. The maternal blood bathes the chorionic villi. c. The epithelium of the decidua is not penetrated by the chorion. d. The binucleated chorionic cells penetrate the decidual epithelium. 2. Which of the following does NOT occur during decidualization? a. endometrial capillaries dilate and form sinusoids b. syncytiotrophoblast extend further and form chorionic villi c. endometrial stromal cells accumulate glycogen and lipids d. syncytiotrophoblast is eroded and lacunae are filled with maternal blood 3. Which of the following reasons justifies the midblastula transition? a. The yolk at the vegetal pole slows down the cleavage divisions. b. The embryo has already completed the requirements for initial cleavage. c. The embryo needs to replenish transcripts after using its maternal reserves. d. The embryo needs to replenish its energy after several rounds of fast…arrow_forward1. A placenta vera is formed if a.The placenta is removed during birth. b. The maternal blood bathes the chorionic villi. c. The epithelium of the decidua is not penetrated by the chorion. d. The binucleated chorionic cells penetrate the decidual epithelium. 2. Which of the following does NOT occur during decidualization? a. endometrial es dilate and form sinusoids b. syncytiotrophoblast extend further and form chorionic villi c. endometrial stromal cells accumulate glycogen and lipids d. syncytiotrophoblast is eroded and lacunae are filled with maternal blood 3. Which of the following reasons justifies the midblastula transition? a. The yolk at the vegetal pole slows down the cleavage divisions. b. The embryo has already completed the requirements for initial cleavage. c. The embryo needs to replenish transcripts after using its maternal reserves. d. The embryo needs to replenish its energy after several rounds of fast division.arrow_forwardWhich is/are true concerning the structure of the uterus? a. The cervix is the neck region of the uterus b. The myometrium is the layer of the uterus that faces the lumen c. The broad ligament is a layer of peritoneum that covers the superior part of the uterus d. The endometrium is the outermost layer of the uterusarrow_forward
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