ANATOMY & PHYSIOLOGY
6th Edition
ISBN: 9780134712437
Author: MARIEB & HOEIN
Publisher: PEARSON EDUCATION (COLLEGE)
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Textbook Question
Chapter 26, Problem 19SAQ
Oogenesis in the female results in one functional gamete—the egg, or ovum. What other cells are produced? What is the significance of this rather wasteful type of gamete production—that is, production of single functional gamete instead of four, as seen in males?
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Describe the development of an oocyte from primordial follicle to when it is released at ovulation. How do hormones contribute to this progression? Describe the development of a spermatogonia to a spermatozoa. How do hormones contribute to this progression? What is the function of Sertoli and Leydig cells?
In humans, gametogenesis in both sexes relies on meiosis. However, spermatogenesis produces four gametes while oogenesis produces only one. Explain why this is so, including the specific structures or processes involved.
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Chapter 26 Solutions
ANATOMY & PHYSIOLOGY
Ch. 26.1 - What are the two major functions of the testes?Ch. 26.1 - Which of the tubular structures shown in Figure...Ch. 26.1 - Muscle activity and the pampiniform venous plexus...Ch. 26.2 - What is the function of the erectile tissue of the...Ch. 26.2 - Prob. 5CYUCh. 26.3 - Name the organs of the male duct system in order,...Ch. 26.3 - What are two functions of the stereocilia on the...Ch. 26.3 - Which accessory organ of the male duct system runs...Ch. 26.4 - Prob. 9CYUCh. 26.4 - What is semen?
Ch. 26.4 - Prob. 11CYUCh. 26.5 - What is erection and which division of the ANS...Ch. 26.5 - Prob. 13CYUCh. 26.6 - What is the final outcome of meiosis?Ch. 26.6 - Describe the major structural and functional...Ch. 26.6 - Prob. 16CYUCh. 26.7 - What is the HPG axis?Ch. 26.7 - Prob. 18CYUCh. 26.7 - What are three secondary sex characteristics...Ch. 26.8 - Briefly, what are the internal genitalia of a...Ch. 26.8 - What two roles do the ovaries assume?Ch. 26.8 - Prob. 22CYUCh. 26.9 - Prob. 23CYUCh. 26.9 - Oocytes are ovulated into the peritoneal cavity...Ch. 26.9 - What portion of the female duct system is the...Ch. 26.10 - What is the female homologue of the bulbo-urethral...Ch. 26.10 - Cite similarities and differences between the...Ch. 26.11 - Developmentally, mammary glands are modifications...Ch. 26.11 - From what cell types does breast cancer usually...Ch. 26.12 - How do the haploid cells arising from oogenesis...Ch. 26.13 - How do identical twins differ developmentally from...Ch. 26.13 - What occurs in the luteal phase of the ovarian...Ch. 26.14 - Which hormone plays an important role in letting...Ch. 26.14 - Which hormone(s) prompt follicle growth? Which...Ch. 26.14 - Which gonadal hormone exerts positive feedback on...Ch. 26.14 - Which gonadal hormone causes the secondary sex...Ch. 26.14 - MAKING connections Youve studied both bone growth...Ch. 26.15 - Prob. 38CYUCh. 26.16 - Which pathogen is most associated with cervical...Ch. 26.16 - What is the most common bacterial STI in the...Ch. 26 - The structures that draw an ovulated oocyte into...Ch. 26 - The usual site of embryo implantation is (a) the...Ch. 26 - The male homologue of the female clitoris is (a)...Ch. 26 - Which of the following is correct relative to...Ch. 26 - Secondary sex characteristics are (a) present in...Ch. 26 - Which of the following produces the male sex...Ch. 26 - Which will occur as a result of nondescent of the...Ch. 26 - The normal diploid number of human chromosomes is...Ch. 26 - Relative to differences between mitosis and...Ch. 26 - Match the key choices with the descriptive phrases...Ch. 26 - The menstrual cycle can be divided into three...Ch. 26 - Spermatozoa are to seminiferous tubules as oocytes...Ch. 26 - Which of the following does not add a secretion...Ch. 26 - The corpus luteum is formed at the site of (a)...Ch. 26 - The sex of a child is determined by (a) the sex...Ch. 26 - FSH is to estrogens as estrogens are to (a)...Ch. 26 - Prob. 17SAQCh. 26 - Describe the major structural (and functional)...Ch. 26 - Oogenesis in the female results in one functional...Ch. 26 - Define menarche. What does it indicate?Ch. 26 - Trace the pathway of a sperm from the male testes...Ch. 26 - Prob. 22SAQCh. 26 - Both the epithelium of the vagina and the cervical...Ch. 26 - Some anatomy students were saying that the...Ch. 26 - A man swam in a cold lake for an hour and then...Ch. 26 - Prob. 1CCSCh. 26 - Prob. 2CCSCh. 26 - Prob. 3CCSCh. 26 - We are back to look in on Mr. Heyden today. Since...
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- Outline the roles of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) in the ovarian cycle of a human female.arrow_forwardThe Human Reproductive System Discuss and compare the products of meiosis in human females and males. How many functional gametes are produced from the daughter cells in each sex?arrow_forwardOvulation releases _________. a. the corpus luteum b. a primordial follicle c. a primary oocyte d. a secondary oocyte and first polar bodyarrow_forward
- In a possible future scenario, male fertility drops to zero, but, luckily, scientists develop a way for women to pro-duce babies by virgin birth. Meiocytes are converted di-rectly (without undergoing meiosis) into zygotes, which implant in the usual way. What would be the short- andlong-term effects in such a society?arrow_forwardWhy is it risky for a haploid sperm cell to go through diffrencition after meiosis?arrow_forwardWhy is it necessary for gametogenesis to reduce the chromosome number of the sex cells by one-half?arrow_forward
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