Human Reproduction Quiz
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Questions and Answers

What is produced by interstitial cells in the testes?

  • Androgens (correct)
  • Follicle-stimulating hormone
  • Sperm
  • Estrogens

    • The lumen of the seminiferous tubule is where sperm are created.

    True

    At what stage of development do the testes typically begin to descend?

    around 3 months

    The __________ connects the testes to the abdominal cavity during development.

    <p>processus vaginalis</p> Signup and view all the answers

    Match the possible abnormal locations of the testicles with their descriptions:

    <p>Pelvic cavity = Testicle remains in pelvic cavity Inguinal canal = Testicle remains in inguinal canal Upper scrotum = Testicle remains in upper scrotum</p> Signup and view all the answers

    What is the primary function of the epididymis?

    <p>Mature and store sperm cells</p> Signup and view all the answers

    The ductus deferens transports sperm from the ejaculatory duct to the epididymis.

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

    What procedure is performed to prevent the transportation of sperm?

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

    The __________ extends from the base of the urinary bladder to the tip of the penis.

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

    Match the part of the male reproductive system with its function:

    <p>Epididymis = Stores and matures sperm cells Ductus Deferens = Carries sperm to the ejaculatory duct Urethra = Carries urine and sperm Spermatic Cord = Contains ducts and blood vessels</p> Signup and view all the answers

    What is the approximate size of each testis?

    <p>4 cm long and 2.5 cm wide</p> Signup and view all the answers

    The tunica albuginea is a muscle that surrounds each testis.

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

    What structure functions as the sperm-forming factory?

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

    Each lobule of the testes contains one to four __________.

    <p>seminiferous tubules</p> Signup and view all the answers

    Match the following parts of the male reproductive system with their functions:

    <p>Testes = Producing sperm Duct system = Transporting sperm Accessory organs = Supporting sperm function External genitalia = Facilitating reproduction</p> Signup and view all the answers

    What is the primary function of the bulbourethral gland?

    <p>Cleanses the urethra of acidic urine</p> Signup and view all the answers

    The sperm cells are the only human cells that have a tail.

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

    What mixture is formed by sperm cells and accessory gland secretions?

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

    Fructose provides ______ for sperm cells.

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

    Match the following structures with their functions:

    <p>Acrosome = Contains enzymes to penetrate the egg Mitochondria = Provides energy for movement Tail = Enables locomotion Nucleus = Houses genetic material</p> Signup and view all the answers

    What is the primary function of an erection?

    <p>To allow penetration and deliver sperm</p> Signup and view all the answers

    Blood flow during sexual excitement causes the penis to shrink.

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

    What term describes the event when the penis becomes enlarged and rigid?

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

    During sexual excitement, blood flows into the penis causing it to become __________.

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

    Match the following terms with their definitions:

    <p>Cutog = Refers to blood flow during sexual excitement Utgan = Refers to the event of erection Erection = Allows for sperm delivery in sexual reproduction Penetrating organ = Penis during sexual activity</p> Signup and view all the answers

    What are the primary reproductive glands in males and females?

    <p>Testes and ovaries</p> Signup and view all the answers

    Oocytes are the male gametes produced in human reproduction.

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

    What are the gametes produced by the male parent called?

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

    The natural process of reproduction is referred to as ______.

    <p>in vivo</p> Signup and view all the answers

    Match the following terms to their definitions:

    <p>Testes = Male gonads Ovaries = Female gonads Sperm = Male gametes Ova = Female gametes</p> Signup and view all the answers

    What is the primary function of the scrotum?

    <p>To maintain testes at a lower temperature</p> Signup and view all the answers

    The shaft, glans penis, and prepuce are regions of the penis.

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

    What temperature does the scrotum maintain for the testes?

    <p>3°C lower than normal body temperature</p> Signup and view all the answers

    The prepuce is often removed by __________.

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

    Match the parts of the penis with their descriptions:

    <p>Shaft = Main body of the penis Glans penis = Enlarged tip of the penis Prepuce = Folded cuff of skin around proximal end Spongy urethra = Surrounded by elongated areas of erectile tissue</p> Signup and view all the answers

    What percentage of semen is produced by seminal vesicles?

    <p>60%</p> Signup and view all the answers

    The prostatic urethra is surrounded by the bulbourethral glands.

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

    What is the main function of the prostate gland?

    <p>To activate sperm</p> Signup and view all the answers

    The spongy urethra runs the length of the _____

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

    Match the following organs with their functions:

    <p>Seminal Vesicles = Produces thick secretion that nourishes sperm Prostate Gland = Secretes a milky fluid that activates sperm Bulbourethral Glands = Produces pre-ejaculate fluid Urethra = Conducts urine and semen out of the body</p> Signup and view all the answers

    Study Notes

    Gonads

    • Primary reproductive glands responsible for producing gametes and hormones.
    • Males have testes; females have ovaries.

    Gametes

    • Spermatozoa: Male reproductive cells produced by testes.
    • Oocytes (ova): Female reproductive cells produced by ovaries.

    The Reproductive System

    • Composed of gonads, duct systems, accessory organs, and external genitalia.

    Male Reproductive System Parts

    • Divided into testes, duct system, accessory organs, and external genitalia.

    Testes

    • Size: Approximately 4cm long and 2.5cm wide.
    • Surrounded by a fibrous capsule called tunica albuginea.
    • Internally subdivided into lobules by extensions called septa.
    • Each lobule houses seminiferous tubules for sperm production.

    Seminiferous Tubules

    • Tightly coiled structures functioning as sperm production sites.
    • Sperm is collected in the rete testis before moving to the epididymis.

    Sperm Travel and Testicle Development

    • Sperm travels from rete testis to the epididymis for maturation.
    • Interstitial cells produce androgens like testosterone.
    • Testes typically descend during embryonic development around the third month.

    Male Reproductive System Abnormalities

    • Possible abnormal testicle locations include the pelvic cavity, inguinal canal, and upper scrotum.
    • Factors affecting testes descent: genetics, maternal health, environmental factors.

    Epididymis

    • Comma-shaped, tightly coiled tube located atop the testis.
    • Functions to mature and store sperm for at least 20 days.
    • Sperm is expelled into the vas deferens via muscle contractions.

    Ductus Deferens (Vas Deferens)

    • Transports sperm from the epididymis to the ejaculatory duct.
    • Uses peristalsis to move sperm and passes through the inguinal canal and over the bladder.
    • Spermatic cord includes the ductus deferens, blood vessels, and nerves.
    • A vasectomy involves cutting the ductus deferens to interrupt sperm transportation.

    Urethra

    • Extends from urinary bladder base to the tip of the penis.
    • Carries urine and sperm; sperm enters through the ejaculatory duct.

    Regions of the Urethra

    • Prostatic urethra: Surrounded by prostate.
    • Membranous urethra: Connects prostatic to penile urethra.
    • Spongy (penile) urethra: Runs the length of the penis.

    Accessory Organs

    • Includes seminal vesicles, prostate gland, and bulbourethral glands.

    Seminal Vesicles

    • Located at the base of the bladder; produce 60% of semen.
    • Secretes fructose, vitamin C, and prostaglandins to nourish sperm.

    Prostate Gland

    • Surrounds the upper urethra and secretes a milky fluid to activate sperm.

    Bulbourethral Gland

    • Produces thick mucus to cleanse urine from the urethra.
    • Serves as a lubricant during sexual intercourse.

    Semen

    • Composed of sperm cells and accessory gland secretions.
    • Accessory gland secretions provide energy, neutralize acidity, inhibit bacteria, and enhance sperm motility.

    Sperm Cell Structure

    • Features include flagellated tail, head with DNA, mitochondria for energy, and acrosome to penetrate the egg.

    External Genitalia

    • Comprised of the penis and scrotum.

    Scrotum

    • Divided skin sac that maintains testes' temperature 3°C lower than body temperature for viable sperm production.

    Penis

    • Functions to deliver sperm into the female reproductive tract.
    • Composed of shaft and glans penis (enlarged tip); covered by foreskin (prepuce).
    • Designed to deliver sperm effectively, aided by erectile tissue for erection during sexual arousal.

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    Description

    Test your knowledge on the basics of human reproduction, focusing on gonads and gametes. This quiz will cover the roles of testes and ovaries as well as the types of gametes produced by each gender. Dive into the intricacies of the reproductive system and enhance your understanding of human biology.

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