Loose-leaf Version for What Is Life? A Guide to Biology 4E & LaunchPad for What is Life? A Guide to Biology 4E (Twelve Month Access)
4th Edition
ISBN: 9781319154639
Author: Jay Phelan
Publisher: W.H. Freeman & Co
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Chapter 26, Problem 11MC
Summary Introduction
Introduction:
For fertilization to occur within the female body, the sperm must reach the egg in the Fallopian tube, in both natural and artificial fertilization methods.
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Choose the most accurate statement for spermatogenesis and oogenesis.Pilih kenyataan yang paling tepat mengenai spermatogenesis dan oogenesis.A. A sperm cell is larger than an ovum.B. Spermatogenesis occurs in the ovary, while oogenesis occurs in the testis.C. Spermatogenesis is a lifelong process, while oogenesis will stop atmenopause.D. A spermatogonium develops into secondary spermatocytes, while anoogonium develops into a secondary oocyte.
How do tubal ligations and vasectomies prevent further pregnancies?
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a. The corpus luteum and the epididymis are suppressed using a chemical swab. The fertilized egg could no longer implant in the endometrium.
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c. The Fallopian tubes and the vas deferens are cut. Eggs and sperm can no longer be produced.
d. The Fallopian tube and vas deferens are cut and tied off, thereby reducing needed reproductive hormone levels.
Chapter 26 Solutions
Loose-leaf Version for What Is Life? A Guide to Biology 4E & LaunchPad for What is Life? A Guide to Biology 4E (Twelve Month Access)
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- Which of the following is not a mechanism on how contraceptive pills work to prevent pregnancy? A. thinning the endometrium to prevent implantation B. inhibition of follicular development and suppression of ovulation C. progesterone inhibits the sperm from penetrating through the cervix and female upper tract by making the cervical mucus unfriendly D. stimulates the production of high testosterone levelsarrow_forwardWhich of the following is the best explanation for the mechanism, of the action of the intrauterine device (IUD)? A. Hyperperistalsis of the fallopian tubes accelerates oocyte transport and prevents fertilization B. A sub-acute or chronic bacterial endometritis interferes with implantation C. Premature endometrial sloughing associated with menorrhagia causes early abortion D. A sterile inflammatory response of the ometrium prevents implantation E. Cervical mucus is rendered impenetrable to migrating spermarrow_forwardHelp me with both of this pleaseeeee Sperm capacitation differs from fertilization because capacitation is the: Group of answer choices A. ) change from the spermatid to a mobile sperm in epididymis B.) entry of the sperm into a receptive oocyte C.) loss of the sperm's acrosome covering to release enzymes D. ) depolarization of the oocyte membrane by the sperm Which of the following hormones is NOT released by the placenta? Group of answer choices A. ) relaxin b.) oxytocin c.) human chorionic thryotropin (hCT) d. ) lactogen (hPL)arrow_forward
- Match each method of protection with a means of birth control in the key. Key: a. vasectomy b. oral contraception c. intrauterine device (IUD) d. diaphragm e. male condomarrow_forwardIdentify 3 effects of progesterone on pregnancy. Select one or more: O a. This causes the uterus to remain contracted after delivery to reduce blood loss from the placental site O b. This is produced when the ovarian follicle that encloses the developing egg forms a structure called the corpus luteum O c. This decreases bladder tone leading to an increased risk of urinary infection O d. This prepares the body for pregnancy. It acts as an appetite stimulant Identify 1 effect of the hormone vasopressin in pregnancy. Select one: O a. This has an important compensatory mechanism for restoring blood pressure in hypovolaemic shock such as that which occurs during haemorrhage O b. Promotes the maintenance of the corpus luteum at the beginning of pregnancy O C. Involved in thickening of the endometrium and other aspects of regulating the menstrual cyclearrow_forwardMatch the description with the term. A. Fallopian tube B. Endometrium c. Infundibulum v Storage site for sperm, hugs the posterior aspect of the testes. D Seminiferous tubules v Site of fetal development and growth vExternal sac, enclosed the testes E. Scrotum v Sperm production occurs within these slender, tightly coiled structures. F. Perimetrium v The portion of the uterus that is lost every month. G. Epididymis H. Uterus I. Prepuce J. Prostate glandarrow_forward
- In assisted reproductive technology (ART), there is a need to stimulate the ovaries to produce more than one mature ova. The drug commonly used for this purpose is: * A .Bromocriptine O B.Provera C. Clomiphene O D.Estrogen Other:arrow_forwardAfter fertilization, the successful development of a mature, full-termfetus depends ona. the release of human chorionic gonadotropin (hCG) by the developing placenta.b. the production of estrogen and progesterone by the placental tissues.c. maintenance of the corpus luteum for all 9 months.d. Both a and b are correct.e. All of these are correct.arrow_forwardUnderstanding the causes of infertility can be valuablein developing new birth control methods. Cite a type ofcontraceptive based on each of the following causes ofinfertility:(a) failure to ovulate due to a hormonal imbalance;(b) a large fibroid tumor that disturbs the uterine lining;(c) endometrial tissue blocking uterine tubes;(d) low sperm count (too few sperm per ejaculate).arrow_forward
- Understanding the causes of infertility can be valuablein developing new birth control methods. Cite a type ofcontraceptive based on each of the following causes of infertility:(a) failure to ovulate due to a hormonal imbalance;(b) a large fibroid tumor that disturbs the uterine lining;(c) endometrial tissue blocking uterine tubes;(d) low sperm count (too few sperm per ejaculate).arrow_forwardcombination birth control pills contain estrogen and progestin. A typical pill packet contains 3 weeks of active hormones and 1 week of placebo pills. During the week of placebo pills, menstruation occurs. Use your knowledge of the hormonol control of the female reproductive system to: 1) Explain how the pills alter the feedback pathways of FSH and LH to prevent pregnancy. 2) Explain why menstruation occurs during the placebo weekarrow_forwardIn which of the following does fertilization occur outside the body? a. in vitro fertilizationb. gamete intrafallopian transferc. surrogate mothersd. All of these are correct.arrow_forward
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