Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 49, Problem 8TYK
Summary Introduction
Introduction:
Sperms are produced in testes. Testicles are contained in a pouch-like structure known as scrotum, which provides the testicle an optimum temperature for sperm production. The optimum temperature for sperm production is 2–3 degrees less than the normal body temperature. Ejaculation of sperm from urethra consists of various secretions from other glands also to provide proper pH and ease in motility.
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Chapter 49 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 49.1 - Prob. 1SBCh. 49.2 - What are egg coats, and what is their function?...Ch. 49.2 - Prob. 2SBCh. 49.3 - Outline the roles of follicle-stimulating hormone...Ch. 49.4 - How does the oral contraceptive pill prevent...Ch. 49 - Prob. 1TYKCh. 49 - Which of the following processes does not increase...Ch. 49 - Prob. 3TYKCh. 49 - Prob. 4TYKCh. 49 - The slow block to polyspermy: a. is caused by a...
Ch. 49 - Prob. 6TYKCh. 49 - Prob. 7TYKCh. 49 - Prob. 8TYKCh. 49 - Prob. 9TYKCh. 49 - Prob. 10TYKCh. 49 - Prob. 11TYKCh. 49 - Prob. 12TYKCh. 49 - Prob. 13TYKCh. 49 - Prob. 14TYKCh. 49 - Prob. 15TYKCh. 49 - Prob. 16TYKCh. 49 - Prob. 17TYKCh. 49 - Prob. 18TYKCh. 49 - Prob. 1ITDCh. 49 - Prob. 2ITDCh. 49 - Prob. 3ITD
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- Which of the following statements correctly describes the function of the Sertoli cells? a. Stimulate spermatogenesis b. Support the developing sperm cells c. Control the overproduction of testosterone d. Store testosterone in the testesarrow_forwardDuring the menstrual cycle, the degradation of the corpus luteum causes what? A) The decrease of progesterone levels and the thickening of the endometrium. B) The decrease of estrogen levels and increase of progesterone levels. C) The decrease of estrogen levels and the thickening of the endometrium. D) the decrease of progesterone levels and menses(period)arrow_forwardWhich of the following does not describe the accessory glands of the female reproductive system? TheyA. are saclike expansions of the vaginal region. B. Are muscular and ectodermal in origin.C. usually open at the apical portion of the bursa copulatrix.D. creamy white in color and opens into the genital chamber. Spermatophores are specialized packets held together by glands thatA. play a role in influencing the permeability of the testicular wall.B. are used to transport sperms into the female reproductive tract.C. regulate the release of sperm cells.D. stimulate contraction of the genital ducts. The zone of the testicular follicle where the primary spermatocytes become secondary spermatocytes and spermatids during the first and second meiosisrespectively is the zone ofA. transformation.B. maturation and reduction.C. growth.D. germarium. A hormone which has been shown in some species to have an inhibitory effect on spermatogenesis isA. ecdysone.B. peptide hormone.C. juvenile hormone.D.…arrow_forward
- What are two important differences between the processes of spermatogenesis and oogenesis in animals?arrow_forwardWhich of these has the largest amount of DNA? a. Spermatogonial cells b. Primary spermatocyte c. Secondary spermmatocyte d. Sertoli cells e. First polar bodyarrow_forwardWhich of the following processes takes place simultaneously during the menstrual cycle? a) High LH levels and ovulation b) Reconstruction of the corpus luteum and increased release of progesterone from the ovaries c) Maximum LH release and menstruation (bleeding) d) Early follicular development and uterine lining e) Ovulation and menstruationarrow_forward
- In tabular form, Cite the differences of spermatogenesis on grasshopper and ratarrow_forwardCompare and contrast the Spermatogenesis and structure of the testes of: Rat (Vertebrates) Starfish (Invertebrates) Grasshopper (Insects) Frogs (Amphibians)arrow_forwardWhich of the following is a major difference between spermatogenesis and oogenesis? a. Spermatogenesis involves meiosis, and oogenesis involves mitosis. b. Spermatogenesis is continuous, but oogenesis is variable. c. Spermatogenesis produces fewer gametes per precursor cell than oogenesis. d. All of these are significant differences between oogenesis and spermatogenesis.arrow_forward
- Which list is the correct order that sperm must pass through to get to egg?Group of answer choices a) Ductus deferens, urethra, vagina, uterus, uterine tube b) Ductus deferens, urethra, uterus, ovary c) Ductus deferens, prostate, seminal vesicle, uterine tube d) Ductus deferens, seminal vesicle, urethra, vagina, uterus, uterine tubearrow_forwardWhat is the differences between Mammals and Frogs in Spermatogenesis?arrow_forwardHow do you expect Kartagener syndrome leads to infertility? A. The lack of a plasma membrane means that pathogens and foreign substances can permeate the sperm and damage the DNA B. The lack of microtubules mean the sperm do not have tails and cannot swim to fertilize the egg C. The lack of dynein means that the sperm cannot bend their tails to swim and fertilize the eggarrow_forward
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