Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 42.2, Problem 2CYL
explain how hormonal interactons control reproduction in men and women?
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Describe endocrine regulation of reproduction in the human male.
Many hormones, including FSH, LH, progesterone, and estrogen are controlled through a negative feedback system. Although higher levels of estrogen in the follicular stage suppress the secretion of FSH and LH in the anterior pituitary, there is an LH spike at day 14 (ovulation).Can you provide an explanation as to why an LH/FSH spike may occur using the estrogen feedback loop?
What would a feedback loop for someone who has secondary hypogonadism and is receiving testosterone replacement therapy look like and why?
Chapter 42 Solutions
Biology
Ch. 42.1 - Prob. 1TCCh. 42.1 - Prob. 2TCCh. 42.1 - Prob. 1CSCCh. 42.1 - Prob. 1CYLCh. 42.1 - Prob. 2CYLCh. 42.1 - Prob. 3CYLCh. 42.2 - Mammalian sperm dont live very long after...Ch. 42.2 - Prob. 1TCCh. 42.2 - Prob. 1HYEWCh. 42.2 - describe the human male and female reproductive...
Ch. 42.2 - explain how hormonal interactons control...Ch. 42.2 - describe spermatogenesis and oogenesis, the...Ch. 42.3 - In 2017, scientists used CRISPR Cas9 DNA editing...Ch. 42.3 - describe the principal methods of contraception,...Ch. 42.3 - Prob. 2CTCh. 42 - In humans, sperm are produced in the a....Ch. 42 - In humans, fertilization usually occurs in the a....Ch. 42 - Prob. 3MCCh. 42 - Prob. 4MCCh. 42 - Prob. 5MCCh. 42 - Reproduction by a single animal, without the need...Ch. 42 - In mammals, the male gonad is called...Ch. 42 - Prob. 3FIBCh. 42 - Prob. 4FIBCh. 42 - Prob. 5FIBCh. 42 - Oocytes develop in a multicellular structure, the...Ch. 42 - Describe the advantages and disadvantages of...Ch. 42 - Compare the structures of the egg and sperm. What...Ch. 42 - Prob. 3RQCh. 42 - List the structures, in order, through which a...Ch. 42 - Name the three accessory glands of the male...Ch. 42 - Prob. 6RQCh. 42 - Prob. 1AC
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- For successful reproduction to occur, various gonadotrophic hormones need to be involved. What hormones are produced and what are their roles in oocyte development, ovulation, fertilization, implantation, and embryonic survival?arrow_forwardNegative feedback loops maintain homeostasis in the human body. During labour a positive feedback loop is an integral part of the process. A) What is a positive feedback loop? B) Describe the two positive feedback that is used during parturition. Make sure to include both hormones involved in parturition.arrow_forwardWhich of the following is NOT TRUE? A) Menopause is marked by elevated levels of gonadotropins. A spermatozoon can survive for more than five days in a female reproductive tract. C) The proliferative endometrial phase is promoted by progesterone. Synthetic estrogens act as contraceptives by preventing the ovarian luteal phase. The hormonal basis of stress-induced amenorrhea is due to the influence of the limbic system on GNRH secretion.arrow_forward
- Describe TWO positive feedback loops that are part of parturition and/or lactation. For each pathway, identify the mechanism that triggers the response, the glands, and the hormones involvedarrow_forwardCan you explain the phases of the ovarian and the uterine cycles and their hormonal regulation?arrow_forwardLH and FSH normally do which things? O A) inhibit estrogen and progesterone production by the uterus B) inhibit estrogen and progesterone production by the pituitary C) stimulate estrogen and progesterone production by the ovaries D) They have no effect on estrogen or progesterone production. E) stimulate estrogen and progesterone production by the pituitaryarrow_forward
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