WHAT IS LIFE LL W/ LAUNCHPAD
4th Edition
ISBN: 9781319231859
Author: PHELAN
Publisher: Macmillan Higher Education
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Chapter 26, Problem 7MC
Summary Introduction
Introduction:
The ovarian follicles begin to mature in preparation for the release of the next egg, only when estrogen levels dip below a certain level.
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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 levels
Identify 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 cycle
How do tubal ligations and vasectomies prevent further pregnancies?
Select one:
a. The corpus luteum and the epididymis are suppressed using a chemical swab. The fertilized egg could no longer implant in the endometrium.
b. The Fallopian tubes and vas deferens are cut and tied off, thereby preventing the movement of the eggs and sperm.
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
WHAT IS LIFE LL W/ LAUNCHPAD
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- In the fertility awareness method of birth control, a woman gauges her monthly fertile period by monitoring changes in the consistency of her vaginal mucus. What kind of information does such a method provide about the likelihood of getting pregnant?arrow_forwardUsing the following hormone choices, which of the following puts the hormones of the female menstrual cycle in the correct order starting from day 1 and assuming a pregnancy has happend. A. estrogen B. follicle stimulating hormone (FSH) C. human chorionic gonadotropin (HCG) D. luteinizing hormone (LH) E. progesterone F. testosterone O A. B, E, C, A, D O B. A, D, B, C, E O C.B, A, D, E, C O D. D, B, A, E, Carrow_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
- Which of the following embryological events is involved in the formation of the ovarian follicles? a. Development of a genital tubercle in the cranial and the cloacal membrane b. Differentiation of the endoderm of the urogenital sinus c. Formation of longitudinal invaginations along the lateral aspect of the mesonephros d. Innervation of the ovary by neural crest cells e. Migration of the primordial germ cells from the yolk sacarrow_forwardUsing the following hormone choices, which of the following puts the hormones of the female menstrual cycle in the correct order starting from day 1 and assuming a pregnancy has happend. A. estrogen B. follicle stimulating hormone (FSH) C. human chorionic gonadotropin (HCG) D. luteinizing hormone (LH). E. progesterone F. testosterone ОА. В, Е, С, А, D ОВ.А, D, B, С, Е ОСВ, А, D, E, С O D. D, B, A, E, Carrow_forwardAll of the following are characteristics of the uterine endometrium presented in the slide in the normal menstrual cycle EXCEPT a. Surface epithelium contains ciliated cells and secretory cells b. Glands are straight and contain many mitotic figures c. The tissue is under the influence of progesterone d. Lumens of glands contain secretions e. Basalis and functionalis layers are presentarrow_forward
- The most widely used hormonal methods of birth control: a. prevent fertilization by killing sperm b. prevent ovulation by inhibiting release of FSH and LH c. prevent implantation into the endometrium d. block transport of fertilized egg to uterusarrow_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_forwardA woman taking birth control pills would be expected to have Select one: a. higher than normal FSH and LH levels due to fewer negative feedback messages being sent to the ovaries b. higher than normal FSH and LH levels due to fewer negative feedback messages being sent to the pituitary gland c. lower than normal FSH and LH levels due to more negative feedback messages being sent to the pituitary gland d. lower than normal FSH and LH levels due to more negative feedback messages being sent to the ovariesarrow_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 menstruation, the functional layer is shed from the endometrium. Explain the hormonal and physical factors responsible for this shedding. (See Figure 25.19.)arrow_forward
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