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Ch. 46 - Animal Reproduction
All textbooksCampbell 11th EditionCh. 46 - Animal ReproductionProblem 3
Chapter 46, Problem 3

Which of the following is not properly paired? a. seminiferous tubule—cervix b. vas deferens—oviduct c. testosterone—estradiol d. scrotum—labia majora

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1
Identify the function and location of each term in the pairs.
Determine if each pair consists of analogous structures or substances from male and female reproductive systems.
Check if the seminiferous tubule (male) and cervix (female) serve similar functions or are structurally analogous.
Compare the vas deferens (male) and oviduct (female) to see if they are functionally equivalent in their respective systems.
Evaluate if testosterone (male hormone) and estradiol (female hormone) are comparable in their roles in the reproductive system.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Reproductive Anatomy

Reproductive anatomy refers to the structures involved in the reproductive system of both males and females. In males, key structures include the seminiferous tubules, vas deferens, and scrotum, while in females, the cervix, oviduct (fallopian tube), and labia majora are significant. Understanding these structures and their functions is essential for identifying correct pairings in reproductive biology.
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Hormonal Regulation

Hormonal regulation in reproduction involves the interplay of hormones such as testosterone and estradiol, which are critical for the development and functioning of reproductive organs. Testosterone is primarily associated with male characteristics and reproductive functions, while estradiol is a form of estrogen important for female reproductive health. Recognizing the roles of these hormones helps clarify their proper associations.
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Pairing of Structures

The pairing of reproductive structures often involves matching male and female counterparts or related functions. For example, the seminiferous tubules produce sperm in males, while the oviduct is involved in egg transport in females. Understanding these relationships is crucial for determining which pairs are correctly matched or mismatched in the context of reproductive biology.
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Related Practice
Textbook Question

Which of the following characterizes parthenogenesis? a. An individual may change its sex during its lifetime. b. Specialized groups of cells grow into new individuals. c. An organism is first a male and then a female. d. An egg develops without being fertilized.

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Textbook Question

In male mammals, excretory and reproductive systems share a. the vas deferens. b. the urethra. c. the seminal vesicle. d. the prostate.

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Textbook Question

Peaks of LH and FSH production occur during a. the menstrual flow phase of the uterine cycle. b. the beginning of the follicular phase of the ovarian cycle. c. the period just before ovulation. d. the secretory phase of the uterine cycle.

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Textbook Question

During human gestation, rudiments of all organs develop a. in the first trimester. b. in the second trimester. c. in the third trimester. d. during the blastocyst stage.

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Textbook Question

Which of the following is a true statement? a. All mammals have menstrual cycles. b. The endometrial lining is shed in menstrual cycles but reabsorbed in estrous cycles. c. Estrous cycles are more frequent than menstrual cycles. d. Ovulation occurs before the endometrium thickens in estrous cycles.

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