BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 51, Problem 8U
In humans, fertilization occurs in the____, and implantation of the zygote occurs in the____.
a. seminiferous tubules; uterus
b. vagina; oviduct
c. oviduct; uterus
d. urethra; uterus
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If the gonads within an embryo produce testosterone because of the presence of a Y gene on the sex chromosome, then the ____________ will develop and the _________ will deteriorate. a. Müllerian ducts; Wolffian ducts b. Wolffian ducts; Müllerian ducts c. ovaries; testes d. testes; ovaries
Chapter 51 Solutions
BIOLOGY
Ch. 51.1 - Prob. 1LOCh. 51.1 - Prob. 2LOCh. 51.1 - Prob. 3LOCh. 51.2 - Prob. 1LOCh. 51.2 - Prob. 2LOCh. 51.3 - Prob. 1LOCh. 51.3 - Prob. 2LOCh. 51.3 - Prob. 3LOCh. 51.4 - Prob. 1LOCh. 51.4 - Explain ovulation and the female reproductive...
Ch. 51.4 - Prob. 3LOCh. 51.5 - Prob. 1LOCh. 51.5 - Describe causes of infertility.Ch. 51 - Prob. 1DACh. 51 - Why might it be adaptive for an individual to be...Ch. 51 - Prob. 2IQCh. 51 - Why do you think the brain is affected when the...Ch. 51 - You have discovered a new organism living in tide...Ch. 51 - Prob. 2UCh. 51 - Prob. 3UCh. 51 - Which of the following structures is the site of...Ch. 51 - FSH and LH are produced by the a. ovaries. b....Ch. 51 - Prob. 6UCh. 51 - Mutations that affect proteins in the acrosome...Ch. 51 - In humans, fertilization occurs in the____, and...Ch. 51 - The testicles of male mammals are suspended in the...Ch. 51 - Prob. 1ACh. 51 - Which of the following is a major difference...Ch. 51 - Prob. 3ACh. 51 - Internal and external fertilization differ in that...Ch. 51 - Prob. 1SCh. 51 - Why do you think that amphibians and many fish...Ch. 51 - How are the functions of FSH and LH similar in...Ch. 51 - Prob. 4SCh. 51 - Why are all parthenogenic parents female?
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- A human blastocyst normally implants in ................. a. an oviduct c. the uterus b. a seminiferous tubule d. the vaginaarrow_forwardFigure 18.12 Which of the following statements about the male reproductive system is false? a. The vas deferens carries sperm from the testes to the seminal vesicles. b. The ejaculatory duct joins the urethra. c. Both the prostate and the bulbourethral glands produce components of the semen. d. The prostate gland is located in the testes.arrow_forwardOogenesis involves germ cells in the ovary undergoing meiosis to produce a functional ovum at the end of the process.Which of the following cells is penetrated by a sperm cell during the process of fertilization? Select one: a. Secondary oocyte b. Oogonia c. Primary oocyte d. Ovumarrow_forward
- Without the motility of this structure in the female reproductive system, the ovulated egg would not make it to the fallopian tube. a. Corpus luteum b. Antrum c. Fimbrae d. Placenta e. Cervixarrow_forwardA study of the early embryo indicates that the glans penis of the maledevelops from the same embryonic structure as which of these femalestructures?a. labia majora c. clitoris e. urinary bladderb. uterus d. vaginaarrow_forwardSperm cells originally come from a diploid cell called a… Group of answer choices A. secondary oocyte B. primary spermatocyte C. gonadal cell D. acrosome E. seminiferous cellarrow_forward
- During a menstrual cycle, a midcycle surge of_____ from the_____ triggers ovulation. a. FSH; pituitary c. LH; pituitary b. progesterone; egg d. estrogen; follicle cellsarrow_forwardSpermatogenesis takes place in the a. prostate.gland b. glans penis c. seminiferous tubules d. ejaculatory ductarrow_forwardWhich of the following statement does NOT describe the event that occurs if the ovum is not fertilized? Select one: A. Progesterone maintains the endometrium for the zygote. B. Low level of progesterone results in menstruation. C. The corpus luteum degenerates and stops producing estrogen and progesterone. D. GnRH, FSH, and LH levels begin to increase.arrow_forward
- 1. Embryonic development occurs during this period. A. from the ninth week of gestation to birth B. from fertilization to implantation C. from implantation to the end of the eighth week of gestation D. from conception to birth 2. Part of the gastrulation phase includes the formation of germ layers that will... A. go on to form the placenta. B. form the ectoderm, mesoderm, and endoderm that will become specific tissues and organs. C. spread disease. D. produce the amniotic fluid.arrow_forwardDuring gastrulation, cells from the _____ layer of the bilaminar germinal disc migrate and form the three primary germ layers. a. notochord b. hypoblast c. epiblast d. mesoblastarrow_forwardWhich of the following is NOT associated with the embryo developing into a male: a. androgen c. Müllerian ducts b. Wolffian ducts d. testosteronearrow_forward
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