Sperm Maturation in Epididymis Quiz
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Questions and Answers

What is the approximate total length of seminiferous tubules in 1 testis?

  • 500 meters
  • 25 meters
  • 250 meters (correct)
  • 75 meters
  • Which cells secrete androgens in the testis?

  • Sertoli cells
  • Efferent ductulus cells
  • Myoid cells
  • Interstitial cells (correct)
  • What is the main function of Sertoli cells in the seminiferous tubules?

  • Producing androgens
  • Secreting testosterone
  • Supporting developing sperm precursors (correct)
  • Phagocytizing mature sperm
  • Where do sperm travel to from the rete testis?

    <p>Epididymis (D)</p> Signup and view all the answers

    What is the main function of the prostate gland?

    <p>Liquefaction of coagulated semen (B)</p> Signup and view all the answers

    Which zone of the prostate gland surrounds the superior portion of the urethra?

    <p>Transition zone (A)</p> Signup and view all the answers

    What are corpora amylacea found in the prostate gland primarily composed of?

    <p>Glycoproteins and keratin sulfate (B)</p> Signup and view all the answers

    Which type of epithelium lines the tubuloacinar glands within the prostate gland?

    <p>Simple or pseudostratified columnar epithelium (C)</p> Signup and view all the answers

    Which organelle acts as a basal body and organizes the axoneme of the flagellum?

    <p>Centriole (D)</p> Signup and view all the answers

    During the acrosomal phase, what is the main enzyme found in the acrosome of the sperm?

    <p>Hyaluronidase (D)</p> Signup and view all the answers

    What is the main function of the acrosomal reaction during fertilization?

    <p>Binding to the zona pellucida (A)</p> Signup and view all the answers

    Which phase involves the shedding of unneeded cytoplasm and loss of intercellular bridges from each spermatozoon?

    <p>Maturation phase (C)</p> Signup and view all the answers

    What is the primary role of exosomes and vesicles released from multivesicular bodies in the male reproductive system?

    <p>Modify the spermatozoa cell membranes (D)</p> Signup and view all the answers

    Which process occurs during the passage of sperm through the ducts over 2-4 weeks?

    <p>Integration of exosomes from principal cells (A)</p> Signup and view all the answers

    What is the primary function of the ductus deferens in the male reproductive system?

    <p>Transport of sperm from the epididymis to the prostatic urethra (A)</p> Signup and view all the answers

    Where do the ejaculatory ducts open in the male reproductive system?

    <p>Prostate gland (A)</p> Signup and view all the answers

    What is the key role of accessory glands like seminal vesicles in male reproduction?

    <p>Production of semen (B)</p> Signup and view all the answers

    How does the thick muscular wall of the ductus deferens aid in male reproduction?

    <p>Generating peristaltic contractions to move sperm (C)</p> Signup and view all the answers

    What type of cells initially line the short straight tubules connecting the loops of seminiferous tubules to the rete testis?

    <p>Sertoli cells (B)</p> Signup and view all the answers

    What is the main role of the non-ciliated cuboidal cells in the efferent ductules of the testis?

    <p>Absorption of fluid secreted by Sertoli cells (A)</p> Signup and view all the answers

    Which structure supports the interconnected channels of the Rete testis?

    <p>Smooth muscle cells (D)</p> Signup and view all the answers

    What is the function of the thin layer of circular smooth muscle cells in the walls of efferent ductules?

    <p>Aid in moving sperm into the duct of epididymis (B)</p> Signup and view all the answers

    How do alternating non-ciliated cuboidal and taller ciliated cells contribute to the efferent ductules' function?

    <p>Create fluid flow by absorption and ciliary activity (D)</p> Signup and view all the answers

    Which cells are responsible for absorbing fluid secreted by Sertoli cells in the efferent ductules?

    <p>Simple cuboidal cells (B)</p> Signup and view all the answers

    What is the primary role of the scalloped lining in the efferent ductules of the testis?

    <p>Facilitation of fluid flow through ciliary action (A)</p> Signup and view all the answers

    What is the main energy source for sperm found in the fluid from seminal vesicles?

    <p>Fructose (B)</p> Signup and view all the answers

    Which component of the fluid from seminal vesicles stimulates activity in the female reproductive tract?

    <p>Prostaglandins (D)</p> Signup and view all the answers

    What is the primary function of fibrinogen in the fluid from seminal vesicles?

    <p>Coagulate semen after ejaculation (D)</p> Signup and view all the answers

    What type of cells line the folds of the exocrine gland mentioned in the text?

    <p>Pseudostratified columnar epithelial cells (C)</p> Signup and view all the answers

    Which component in the ejaculate is responsible for allowing semen to coagulate after ejaculation?

    <p>Fibrinogen (B)</p> Signup and view all the answers

    In which gland is secretion dependent on testosterone according to the text?

    <p>Prostate gland (A)</p> Signup and view all the answers

    What type of fibers are found in the lamina propria surrounding the folds of the exocrine gland?

    <p>Elastic fibers (B)</p> Signup and view all the answers

    What is the main function of transferrin in the male reproductive system?

    <p>Supply plasma factors for growth and differentiation (C)</p> Signup and view all the answers

    Which hormone stimulates the production of nutrients and androgen-binding protein in the testis?

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

    What is the primary role of inhibin secreted by endocrine cells in the testis?

    <p>Suppress FSH synthesis and release (B)</p> Signup and view all the answers

    Which condition is orchitis usually secondary to in the male reproductive system?

    <p>Secondary to UTI (D)</p> Signup and view all the answers

    What happens to the embryonic Mullerian/paramesonephric ducts in the absence of Mullerian-inhibiting substance (MIS)?

    <p>They form parts of the female reproductive system (C)</p> Signup and view all the answers

    What is the clinical consequence of chronic inflammation of the testis known as orchitis?

    <p>Involvement of ducts connecting testis to epididymis (A)</p> Signup and view all the answers

    What is the main role of residual bodies in spermiogenesis?

    <p>Aid in discarding excess cytoplasm from developing spermatozoa (A)</p> Signup and view all the answers

    What is the primary function of tubuloacinar glands within the prostate gland?

    <p>Produce prostaglandins (B)</p> Signup and view all the answers

    Which zone of the prostate gland contains the most numerous main glands?

    <p>Peripheral zone (B)</p> Signup and view all the answers

    What is the main role of prostate-specific antigen (PSA) produced by the prostate gland?

    <p>Liquefies coagulated semen (A)</p> Signup and view all the answers

    What primarily makes up corpora amylacea found in the prostate gland?

    <p>Deposited glycoproteins and keratin sulfate (C)</p> Signup and view all the answers

    In which part of the prostate gland does the prostatic urethra run through?

    <p>Transition zone (A)</p> Signup and view all the answers

    What is the characteristic feature of corpora amylacea found in the lumens of tubuloacinar glands in the prostate gland?

    <p>Partially calcified and lamellar nature (C)</p> Signup and view all the answers

    Which zone of the prostate gland surrounds the superior portion of the urethra?

    <p>Transition zone (D)</p> Signup and view all the answers

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