Reproductive Systems Quiz

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Questions and Answers

Interstitial cells produce:

  • Androgen-binding protein
  • Inhibin
  • Sperm
  • Nutrients
  • Androgens (correct)

The clitoris:

  • All of these (correct)
  • Is derived from the same embryonic structures as the penis in males
  • Engorges with blood during sexual arousal
  • Is topped by a small erectile glans
  • Contains erectile tissue comparable to the corpora cavernosa of the penis

During meiosis I, maternal and paternal chromosomes fuse together during the process called ________ to form a ________.

synapsis; tetrad

The nurse cells of the seminiferous tubules do all of the following, except that they:

<p>Secrete testosterone (C)</p> Signup and view all the answers

Arrange the four structures listed below into the order in which sperm pass from the testis to the urethral meatus:

<p>4, 1, 3, 2 (E)</p> Signup and view all the answers

The portion of the uterine tube that ends in fingerlike fimbriae is the:

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

The special type of cell division required to produce gametes is called:

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

Inward projections of the tunica albuginea, known as septa, divide the testis into:

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

The vulva includes all of the following, except the:

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

Sperm production occurs in the:

<p>Seminiferous tubules (A)</p> Signup and view all the answers

Each of the following statements concerning oogenesis is true, except that:

<p>About half the oogonia complete mitosis between birth and puberty (B)</p> Signup and view all the answers

The average length of the menstrual cycle is:

<p>28 days (B)</p> Signup and view all the answers

The organ that provides mechanical protection and nutritional support for the developing embryo is the:

<p>Uterus (E)</p> Signup and view all the answers

During the menses:

<p>The old functional layer is sloughed off (A)</p> Signup and view all the answers

The pituitary hormone that stimulates the interstitial cells to secrete testosterone is:

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

The spermatic cord is:

<p>A bundle of tissue that contains the ductus deferens, blood vessels, nerves, and lymphatics that serve the testis (D)</p> Signup and view all the answers

A primary spermatocyte matures into ________ spermatids having ________ chromosomes.

<p>four; 23</p> Signup and view all the answers

The inferior portion of the uterus that projects into the vagina is the:

<p>Cervix (E)</p> Signup and view all the answers

A rise in the blood levels of follicle-stimulating hormone at the beginning of the ovarian cycle is responsible for:

<p>Follicle maturation (C)</p> Signup and view all the answers

The role of FSH in males is to:

<p>Initiate sperm production in the testes (A)</p> Signup and view all the answers

Flashcards

Interstitial Cells Function

Produce androgens, essential for male reproductive functions.

Clitoris

Female erectile tissue, homologous to the male penis, engorges with blood during arousal.

Synapsis in Meiosis I

Phase where maternal and paternal chromosomes fuse, forming a tetrad.

Nurse Cells

Maintain blood-testis barrier and support sperm development in seminiferous tubules.

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Sperm Pathway

Epididymis → Ductus Deferens → Ejaculatory Duct → Urethra.

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Infundibulum

Distal segment of uterine tube with fimbriae.

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Meiosis

Specialized cell division to produce gametes.

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Septa of Testis

Inward projections of tunica albuginea dividing testis into lobules.

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Vulva Components

Includes labia majora/minora, clitoris, and mons pubis.

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Sperm Production Site

Seminiferous tubules.

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Oogonia

Female gamete stem cells.

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Menstrual Cycle Length

Approximately 28 days.

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Uterus Function

Protection and nutritional support for embryo.

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Menstrual Phase

Shedding of old uterine lining.

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Luteinizing Hormone (LH) in Males

Stimulates interstitial cells to secrete testosterone.

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Spermatic Cord

Ductus deferens, vessels, nerves, and lymphatics servicing testis.

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Primary Spermatocyte Outcome

Matures into four spermatids, each with 23 chromosomes.

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Cervix

Inferior part projecting into the vagina.

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FSH's role in the Ovarian Cycle

FSH surge at cycle start.

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FSH Role in Males

Initiates sperm production, crucial for male fertility.

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Study Notes

Interstitial Cells

  • Interstitial cells primarily produce androgens, crucial for male reproductive health.

Clitoris

  • Derived from similar embryonic structures as the male penis.
  • Engorges with blood during sexual arousal.
  • Contains erectile tissue analogous to the corpora cavernosa of the penis.

Meiosis I

  • Maternal and paternal chromosomes fuse during synapsis to form a tetrad, essential for genetic diversity.

Nurse Cells

  • Found in seminiferous tubules, these cells maintain the blood-testis barrier and support spermiogenesis.
  • Do not secrete testosterone.

Sperm Pathway

  • Sperm travel through the following order: epididymis, ductus deferens, ejaculatory duct, and finally into the urethra.

Uterine Tube Structure

  • The distal segment of the uterine tube is known as the infundibulum, which features fingerlike fimbriae.

Gamete Production

  • Meiosis is the specialized cell division required to produce gametes.

Testis Structure

  • The tunica albuginea has inward projections called septa, dividing the testis into lobules filled with seminiferous tubules.

Components of the Vulva

  • The vulva includes the labia majora, labia minora, clitoris, and mons pubis, but not the vagina.

Sperm Production

  • Occurs in the seminiferous tubules of the testes.

Oogenesis Facts

  • About 80% of a girl's oocytes are lost by birth.
  • Oogenesis begins before birth, with ova developing from stem cells called oogonia.

Menstrual Cycle

  • The average length of the menstrual cycle is approximately 28 days.

Uterus Function

  • The uterus provides mechanical protection and nutritional support for the developing embryo.

Menstrual Phase

  • During menstruation, the old functional layer of the uterine lining is sloughed off.

Hormonal Regulation

  • Luteinizing hormone (LH) stimulates interstitial cells in males to secrete testosterone.

Spermatic Cord

  • The spermatic cord comprises the ductus deferens, blood vessels, nerves, and lymphatics servicing the testis.

Primary Spermatocyte

  • A primary spermatocyte matures into four spermatids, each containing 23 chromosomes.

Uterine Anatomy

  • The cervix is the inferior portion of the uterus that projects into the vagina.

Follicle-Stimulating Hormone (FSH)

  • A rise in FSH levels at the start of the ovarian cycle promotes follicle maturation.

FSH Role in Males

  • FSH initiates sperm production in the testes, critical for male fertility.

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