Which of the following is the best description of how pregnancy most often occurs? Sperm enter the body through the urethra, then travel to the uterus where fertilization occurs Sperm enter the body through the urethra, then travel to the Fallopian tubes where fertilization occurs Sperm enter the body through the urethra, then travel to the ovaries where fertilization occurs Sperm enter the body through the vagina, then travel to the uterus where fertilization occurs O Sperm enter the body through the vagina, then travel to the Fallopian tubes where fertilization occurs O Sperm enter the body through the vagina, then travel to the ovaries where fertilization occurs 0OOO O0

Which of the following is the best description of how pregnancy most often occurs? Sperm enter the body through the urethra, then travel to the uterus where fertilization occurs Sperm enter the body through the urethra, then travel to the Fallopian tubes where fertilization occurs Sperm enter the body through the urethra, then travel to the ovaries where fertilization occurs Sperm enter the body through the vagina, then travel to the uterus where fertilization occurs O Sperm enter the body through the vagina, then travel to the Fallopian tubes where fertilization occurs O Sperm enter the body through the vagina, then travel to the ovaries where fertilization occurs 0OOO O0

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter43: Animal Reproduction And Development

Section: Chapter Questions

Problem 3VCQ: Figure 43.17 Which of the following statements about the menstrual cycle is false? Progesterone...

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One of your best friends tells you that she and her husband think she might be pregnant. She feels she can wait until shes several months along before finding an obstetrician. You think she could use some medical advice sooner, and you suggest she discuss her plans with a physician as soon as possible. What kinds of health issues might you be concerned about?
Figure 43.17 Which of the following statements about the menstrual cycle is false? Progesterone levels rise during the luteal phase of the ovarian cycle and the secretory phase of the uterine cycle. Menstruation occurs just after LH and FSH levels peak. Menstruation occurs after progesterone levels drop. Estrogen levels rise before ovulation, while progesterone levels rise after.
The placenta is formed from ________. the embryos mesenchymal cells the mothers endometrium only the mothers endometrium and the embryos chorionic membrane the mothers endometrium and the embryos umbilical cord
A spermatogonial cell undergoes mitosis before entering the meiotic cell cycle en route to the production of sperm. However, during mitosis the cytoplasm fails to divide, and only one daughter cell is produced. A resultant sperm eventually fertilizes a normal ovum. What is the chromosomal complement of the embryo?
Ovulation releases _________. a. the corpus luteum b. a primordial follicle c. a primary oocyte d. a secondary oocyte and first polar body
Which of the following events does NOT occur in preparation for pregnancy? * After fertilization progesterone & estrogen begin to decline. Without fertilization menstruation occurs. The Secretory phase is due to the growth of endometrial glans & secretion of glycogen. Progesterone & Estrogen cause thickening of the endometrium. The preparatory phase peaks at 1 week after ovulation.
Ovaries secrete the hormone estrogen in greater amounts after menstruationand a few days before ovulation. Among its many effects, estrogen causesthe up-regulation of receptors in the uterus for another hormone secretedby the ovaries, called progesterone. Progesterone, which is secreted afterovulation, prepares the uterine wall for possible implantation of an embryo.Pregnancy cannot occur unless the embryo implants in the uterine wall.Predict the consequence of the ovaries’ secreting too little estrogen.
What is a three-parent baby? The procedure in creating one through vitro fertilizationand What problem does it solve?
Successful conception (fertilization of the ovum) usually occurs in the: O vagina O ovary O uterine tube cervix O uterus
Understanding 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).
Which of the following is true about Organogenesis? Choose all possible answers. anterior pituitary gland releases FSH and LH that drives ovarian development is the process by which mature female gametes, or ova, develop from germ cells. begins at puberty LH surge causes the oocyte to mature. After the secondary oocyte is released from the ovary, meiosis is completed.
Besides tobacco, alcohol, and illegaldrugs, what are some other potential risksthat a pregnant woman should avoid?Why?