Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Textbook Question
Chapter 27, Problem 18RQ
Without SRY expression, an embryo will develop ________.
- male reproductive structures
- female reproductive structures
- no reproductive structures
- male reproductive structures 50 percent of the time and female reproductive structures 50 percent of the time
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Without SRY expression, an embryo will develop ________.a. male reproductive structuresb. female reproductive structuresc. no reproductive structuresd. male reproductive structures 50 percent of thetime and female reproductive structures 50percent of the time
In a femal human, the oogonium forms when the female is a _______________. This happens _________________. At puberty some of the primary oocytes continue meiosis. Each menstrual cycle a few will continue development. They will only go to __________________. of meiosis and stop unless fertilization occurs.
The oogonium starts meiosis I but stops at ____________________.
Chapter 27 Solutions
Anatomy & Physiology
Ch. 27 - Watch this video...Ch. 27 - Watch this video...Ch. 27 - Watch this video...Ch. 27 - Watch this series of videos...Ch. 27 - A babys gender is determined at conception, and...Ch. 27 - What are male gametes called? ova sperm testes...Ch. 27 - Leydig cells ________. secrete testosterone...Ch. 27 - Which hypothalamic hormone contributes to the...Ch. 27 - What is the function of the epididymis? sperm...Ch. 27 - Spermatogenesis takes place in the ________....
Ch. 27 - What are the female gonads called? oocytes ova...Ch. 27 - When do the oogonia undergo mitosis? before birth....Ch. 27 - From what structure does the corpus luteum...Ch. 27 - Where does fertilization of the egg by the sperm...Ch. 27 - Why do estrogen levels fall after menopause? The...Ch. 27 - The vulva includes the ____________. lactiferous...Ch. 27 - What controls whether an embryo will develop...Ch. 27 - Without SRY expression, an embryo will develop...Ch. 27 - The timing of puberty can be influenced by which...Ch. 27 - Briefly explain why mature gametes carry only one...Ch. 27 - What special features are evident in sperm cells...Ch. 27 - What do each of the three male accessory glands...Ch. 27 - Describe how penile erection occurs.Ch. 27 - While anabolic steroids (synthetic testosterone)...Ch. 27 - Follow the path of ejaculated sperm from the...Ch. 27 - Identify some differences between meiosis in men...Ch. 27 - Explain the hormonal regulation of the phases of...Ch. 27 - Endometriosis is a disorder in which endometrial...Ch. 27 - Identify the changes in sensitivity that occur in...Ch. 27 - Explain how the internal female and male...Ch. 27 - Explain what would occur during fetal development...
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- Figure 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_forwardEach egg cell develops in its own fluidfilled space called a/an _____.arrow_forwardand humans, the ___ determines the sex of the offspring because ___ A. male... The mail can contribute either X or Y B. female… Only the female provides cytoplasm to the zygote C. Male… The sperm can fertilize either a female or a male egg D. Female… Only the female has two functional sex chromosomearrow_forward
- Which of the following will result in identical twins?a. fertilization of two eggs by two different spermb. division of a zygote into two masses before differentiation has begunc. fertilization of two eggs by the same spermd. fertilization of one egg by two different spermarrow_forwardWomen sometimes develop benign tumors calledovarian teratomas or dermoid cysts in their ovaries.Such a tumor begins when a primary oocyte escapesfrom its prophase I arrest and finishes meiosis Iwithin the ovary. (Normally meiosis I does not finish until the primary oocyte is expelled from theovary upon ovulation.) The secondary oocyte thendevelops as if it were an embryo. Development isdisorganized, however, and results in a tumorcontaining differentiated diploid tissues, includingteeth, hair, bone, muscle, and nerve. If a dermoidcyst forms in a woman whose genotype is Aa, whatare the possible genotypes of the cyst, assuming norecombination?arrow_forwardAn egg cell originally comes from an unspecialized diploid cell called a(an)… Group of answer choices A. secondary oocyte B. follicle C. primary oocyte D. oviduct E. oogoniumarrow_forward
- Fill in the blank: The _______________________ is a highly coiled tube on the surface of the testis.arrow_forwardRarely, two sperm may penetrate a secondary oocyte. Do youthink this fertilized cell will survive for long? Why or why not?arrow_forwardFill in the blank: The myometrium is largely composed of _______________________ tissue.arrow_forward
- There are thousands of children born every year with genitalia structures that are nol fully male or female, A condition know as ambiguous genitalia. Please explain how this condition occurs?arrow_forwardFill in the blank: _________________ on the inner lining of the uterine tube aid in moving a developing embryo.arrow_forwardNormally after how many days an ovary release an egg.arrow_forward
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