Chapter 4 Practice Questions

Column 1 9 column 2 lanugo is shed answer lanugo is

Info icon This preview shows pages 8–10. Sign up to view the full content.

View Full Document Right Arrow Icon
79) Column 1: 9 Column 2: lanugo is shed Answer: lanugo is shed Topic: EMBRYONIC AND FETAL DEVELOPMENT Irrelevant questions 6) Calcium ions are released as soon as a spermatozoon enters the secondary oocyte. This l eads to changes in the secondary oocyte that block the entry of other sperm. A) Both statements are true. B) Both statements are false. C) The first statement is true; the second is false. D) The second statement is true; the first is false. Answer: A Topic: FERTILIZATION 9) Following implantation, the trophoblast develops into two layers, syncytiotrophoblast (an extracellular material) and cytotrophoblast (a cellular layer). The cytotrophoblast secretes enzymes that assist the embryo in penetrating the endometrium. 8
Image of page 8

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
14) Following implantation, the stratum functionalis is modified to become the: 17) The hormone _____ causes increased flexibility in certain joints such as the pubic symphysis in the latter part of pregnancy. 32) One advantage of chorionic villi sampling over amniocentesis is that it can be done 6-8 weeks earlier than amniocentesis. Answer: TRUE Topic: PRENATAL DIAGNOSTIC TESTS 33) One advantage of amniocentesis over chorionic villi sampling is that amniocentesis has a lower probability of causing a spontaneous abortion. Answer: TRUE Topic: PRENATAL DIAGNOSTIC TESTS 34) Down syndrome, or trisomy 21, is the leading cause of mental retardation among newborns. Answer: FALSE Topic: APPLICATIONS TO HEALTH 44) The functional changes in sperm while in the female reproductive tract, preparing the sperm to fertilize a secondary oocyte, are collectively referred to as _____. Answer: capacitation Topic: FERTILIZATION 47) The embryonic layer called the _____ develops from the trophoblast of the blastocyst. Answer: chorion Topic: EMBRYONIC AND FETAL DEVELOPMENT 48) The portion of the decidua that separates the embryo from the uterine cavity is called the _____. Answer: decidua capsularis 9
Image of page 9
Topic: EMBRYONIC AND FETAL DEVELOPMENT 49) The maternal part of the placenta is formed from the decidua _____. Answer: basalis Topic: EMBRYONIC AND FETAL DEVELOPMENT 53) A procedure done at 14 to 16 weeks of gestation to test for the presence of certain genetic conditions such as spina bifida and hemophilia is called _____. Answer: amniocentesis Topic: PRENATAL DIAGNOSTIC TESTS 54) The six-week period following delivery, in which maternal organs and physiology return to the prepregnancy state, is called the _____. Answer: puerperium Topic: LABOR 68) Column 1: endoderm Column 2: epithelium of thyroid, parathyroid, pancreas and thymus Answer: epithelium of thyroid, parathyroid, pancreas and thymus Topic: EMBRYONIC AND FETAL DEVELOPMENT 69) Column 1: mesoderm Column 2: epithelium of kidneys and ureters Answer: epithelium of kidneys and ureters Topic: EMBRYONIC AND FETAL DEVELOPMENT 10
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern