FPH (REPRODUCTIVE SYSTEM)


gonads - primary sex organs

  • testes in males, ovaries in female


  • gonads produce gametes (sex cells) and secret hormones.

    • sperm - male gametes

    • ova (eggs) - female gametes


somatic

  • cells that are distributed all throughout the body (soma)

  • dipliod (46)

  • mitosis



gametes

  • aka sex cells/reproductive cells

  • concentrated mainly in the reproductive tract

  • haploid (23)

  • meiosis


testes

  • connected to the trunk via spermatic cord which houses: blodd vessels, nerves, ductus deferens

  • interstital cells in the seminiferous tubules produce andogens such as testosterone

  • coverings of the testes

    • tunica albuginea - a hard capsule that surrounds each testis

    • septa - extensions of the capsule that extend into the testis and divide it into lobules

duct system - transfort sperm from the body, it includes the EDU:

— epididymis

  • highly convoluted tube (6m / 20 ft long)

  • found along the posterior lateral side of the testis

  • first part of the male duct system

  • temporary storage site for immature

  • sperm mature as they journey through the epididymis

  • during ejaculation, spem are propulled to the ductus deferens

    RWPRODUCTIVE SYSTEM HJWHASHJSAJAS E PINRACTICAL EXAM

— ductus (vas) deferens

  • runs from he epididymis via the sprmatic cord through the inguinal canal and arches over the urinary bladder

    • ampulla - end of the ductus deferens, which empties into the ejaculatory duct

    • ejacultory duct - passes through the prostrate to merge with urethra

      • moves sperm by peristalsis (wavelike structure that propel the sperm) into the urethra

  • ejaculation - smooth muscle in the walls of the ductus defrens create peristaltic waves to squeeze sperm forward

  • vasectomy - cutting of the ductus deferens at the level of the testes prevents transformation of sperm (form of birth control)

— urethra