Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 42, Problem 2FIB
In mammals, the male gonad is called the___________ It produces both sperm and the sex hormone __________Within the male gonad, spermatogenesis occurs within the hollow, coiled structures called___________.
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In mammals, the male gonad is called the______ . It produces both sperm and the sex hormone________ . Within the male gonad, spermatogenesis occurs within the hollow, coiled structures called_______ .
Compare and contrast the Spermatogenesis and structure of the testes of:
Rat (Vertebrates)
Starfish (Invertebrates)
Grasshopper (Insects)
Frogs (Amphibians)
Spermatogenesis usually occurs during the ___________ and continues in the _________ stage in some insects. The ________ is composed of germ cells and somatic mesodermal cells. Each follicle contains a large _________ that apparently serves as trophic function. The spermatogonia undergo several __________ divisions to form the primary spermatocytes. The primary spermatocytes become _________ in somatic cells.
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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- Part 1: The hormones listed below all play a key role in male reproduction: A) Follicle Stimulating Hormone (FSH) B) Luteinising Hormone (LH) C) Testosterone Explain the function(s) of these hormones giving reference to: their origin (where they made and released from), their target (cell, tissue, or organ), their stimulatory effects, and where relevant, their inhibitory effects. Part 2: The hormones listed below are each involved in the female menstrual cycle: A) Follicle Stimulating Hormone (FSH) B) Luteinising Hormone (LH) C) Oestrogen D) Progesterone Explain the function(s) of these hormones during the different stages of the menstrual cycle (starting from the point of menstruation). You should consider the following; • their origin (where they made and released from), • their target (cell, tissue, or organ), • their stimulatory effects (and where relevant) their inhibitory effects. • when during the menstrual cycle, their concentrations peak. Completion Notes The core of…arrow_forwardWhich process occurs between the zygote and the embryo stagearrow_forwardA rare genetic disorder in males causes a defect in testosterone production within the testes which can then lead to an absence of puberty and infertility. The defective cell type in this genetic disorder is: 1) Leydig (Interstitial) Cells 2) spermatogonia 3) Graafian follicle cells 4) spermatozoaarrow_forward
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- Compare and contrast the oogenesis and spermatogenesis in zebrafish and drosophila melanogasterarrow_forwardCompare and contrast the following terms: You are invited to a middle school to address 11- to 14-year-old adolescents and discuss puberty. Plan a program to describe how females are affected by estrogen and progesterone and how males are affected by testosterone.arrow_forwardChoose the best of the following The fusion of a sperm and an egg cell initally produces which of thefollowing? a. blastocyst c. zygoteb. gamete d. stem cellarrow_forward
- Which statement about human reproduction is false?(A) Fertilization occurs in the oviduct.(B) Spermatogenesis and oogenesis require differenttemperatures.(C) An oocyte completes meiosis after a sperm penetrates it.(D) The earliest stages of spermatogenesis occur closest to thelumen of the seminiferous tubules.arrow_forwardDescribe spermatogenesis and oogenesis in humans.arrow_forwardAbout the time of ovulation, the anterior pituitary gland releases a surge of _____ which initiates meiosis I and causes the follicle to swell and its wall to weaken.arrow_forward
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