Male Reproductive System Quiz
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Questions and Answers

Which cells in the testes secrete testosterone?

  • Spermatogonia
  • Spermatocytes
  • Sertoli cells
  • Leydig cells (correct)

    • What is the purpose of meiosis in the gonads?

  • To produce gametes
  • To produce diploid cells
  • To increase the number of chromosomes
  • To reduce the number of chromosomes by one-half (correct)

    • What is the final stage of spermatogenesis?

  • Spermiogenesis (correct)
  • Spermatogonia
  • Meiosis II
  • Meiosis I

    • What is the function of mature sperm?

    <p>To fertilize a secondary oocyte</p> Signup and view all the answers

    Which hormone initiates spermatogenesis?

    <p>Follicle-stimulating hormone (FSH)</p> Signup and view all the answers

    Which duct stores sperm and propels them toward the urethra during ejaculation?

    <p>Ductus (vas) deferens</p> Signup and view all the answers

    Which structures are included in the male reproductive system?

    <p>Testes, epididymides, penis, and ducts and glands</p> Signup and view all the answers

    What is the function of the scrotum?

    <p>To support the testes</p> Signup and view all the answers

    How is the temperature of the testes regulated?

    <p>By the cremaster muscle</p> Signup and view all the answers

    What is the function of the seminal vesicles and prostate gland?

    <p>To add fluids to the sperm to create semen</p> Signup and view all the answers

    Where are sperm cells made?

    <p>In the testes</p> Signup and view all the answers

    What is the function of Sertoli cells in the testes?

    <p>To form the blood-testis barrier</p> Signup and view all the answers

    Which of the following is a function of the vagina?

    <p>Receptacle of the penis during sexual intercourse</p> Signup and view all the answers

    What is the term for the external genitalia of the female?

    <p>Vulva</p> Signup and view all the answers

    What is the main function of the mammary glands?

    <p>Synthesis of milk and secretion and ejection of milk</p> Signup and view all the answers

    Which hormone inhibits the secretion of FSH and GnRH?

    <p>Inhibin</p> Signup and view all the answers

    What is the function of estrogens?

    <p>Promotion of the development and maintenance of female reproductive structures, secondary sex characteristics, and the breasts</p> Signup and view all the answers

    What is the main function of progesterone?

    <p>Prepare the endometrium for implantation and the mammary glands for milk synthesis</p> Signup and view all the answers

    During which phase of the menstrual cycle does the corpus luteum secrete estrogens and progesterone?

    <p>Postovulatory phase</p> Signup and view all the answers

    What happens to the corpus luteum if fertilization and implantation do not occur?

    <p>It forms the corpus albicans</p> Signup and view all the answers

    What triggers ovulation in a 28-day menstrual cycle?

    <p>LH surge</p> Signup and view all the answers

    What is the role of the corpus luteum during pregnancy?

    <p>To secrete estrogens and progesterone to support pregnancy</p> Signup and view all the answers

    What is the function of oral contraceptives?

    <p>To prevent fertilization</p> Signup and view all the answers

    What is the postovulatory phase also known as?

    <p>Luteal phase</p> Signup and view all the answers

    Which of the following is true about the inguinal canal?

    <p>It is where the spermatic cord passes through</p> Signup and view all the answers

    What is the function of the ejaculatory ducts?

    <p>To eject spermatozoa into the prostatic urethra</p> Signup and view all the answers

    What is the male urethra used for?

    <p>To eject spermatozoa into the prostatic urethra</p> Signup and view all the answers

    What is the main function of the seminal vesicles?

    <p>To secrete an alkaline fluid</p> Signup and view all the answers

    What is the main function of the prostate gland?

    <p>To neutralize acid in the male urethra</p> Signup and view all the answers

    What is the main function of the bulbourethral (Cowper's) glands?

    <p>To secrete mucus for lubrication</p> Signup and view all the answers

    Study Notes

    Male Reproductive System

    • Leydig cells in the testes secrete testosterone.
    • Meiosis in the gonads produces gametes (sperm or ova) with a unique combination of chromosomes.
    • The final stage of spermatogenesis is the formation of mature sperm.
    • The function of mature sperm is to fertilize an egg cell.
    • The hormone that initiates spermatogenesis is follicle-stimulating hormone (FSH).
    • The vas deferens stores sperm and propels them toward the urethra during ejaculation.
    • The male reproductive system includes the testes, epididymis, vas deferens, seminal vesicles, prostate gland, urethra, and penis.

    Scrotum and Temperature Regulation

    • The function of the scrotum is to regulate the temperature of the testes, which is essential for spermatogenesis.
    • The temperature of the testes is regulated by the scrotum, which can move closer to or farther from the body to maintain a cooler temperature than the rest of the body.

    Sertoli Cells and Seminal Vesicles

    • Sertoli cells in the testes provide support and nourishment to developing sperm cells.
    • The seminal vesicles and prostate gland produce fluids that make up semen, which nourishes and transports sperm during ejaculation.

    Female Reproductive System

    • Sperm cells are made in the testes, but egg cells are made in the ovaries.
    • The vagina is the external genitalia of the female, and its function is to receive sperm during sexual intercourse.
    • The term for the external genitalia of the female is the vulva.
    • The main function of the mammary glands is to produce milk for nursing infants.

    Hormones

    • Inhibin inhibits the secretion of FSH and GnRH.
    • Estrogens are hormones produced by the ovaries that stimulate female secondary sex characteristics and regulate the menstrual cycle.
    • The main function of progesterone is to prepare the uterus for implantation of a fertilized egg.

    Menstrual Cycle

    • During the luteal phase of the menstrual cycle, the corpus luteum secretes estrogens and progesterone.
    • If fertilization and implantation do not occur, the corpus luteum degenerates.
    • The surge of luteinizing hormone (LH) triggers ovulation in a 28-day menstrual cycle.
    • During pregnancy, the corpus luteum continues to produce progesterone to maintain the pregnancy.
    • Oral contraceptives prevent ovulation by inhibiting the surge of LH.
    • The postovulatory phase is also known as the luteal phase.

    Other Reproductive Structures

    • The inguinal canal is a passageway for the spermatic cord in males.
    • The ejaculatory ducts connect the seminal vesicles and vas deferens.
    • The male urethra is used for both urination and ejaculation.
    • The main function of the seminal vesicles is to produce fluids that make up semen.
    • The main function of the prostate gland is to produce fluids that make up semen.
    • The main function of the bulbourethral (Cowper's) glands is to produce fluids that make up semen.

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    Description

    Test your knowledge of the male reproductive system! Learn about the inguinal canal, ejaculatory ducts, and male urethra in this quiz.

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