Biopsychology Test Sexual Development and Behavior

  1. Y chromosome contains gene..
    • Sex-deteriminging Region of Y (SRY)
    • codes for protein
  2. SRY gene
    • Found in Y chromosome
    • contains coding for protein Testis-determining factor (TDF)
    • or SRY protein...
  3. Primordial gonads
    Groups of cells that both male and females have prior to 6 weeks of fetal develpment
  4. Mullerian ducts or system
    contains fetal cells that develope into female reproductive rogans (uterus vagina fallopian tubes)
  5. Wolffian ducts
    • contain fetal cells that develop into male reproductive organs (seminal vesciles vas deferences)
    • Differentiation occurs in the 3rd prenatal month
  6. Testis-determing factor (TDF)
    under influence of TDF protein their is development of testies. without development of ovaries
  7. Process as testes develop...
    Testosterone.....enzyme....5-alpha reductace....converts to.....dihydrotestosterone......mullerian-inhibiting substnace

    Testosterone and dihydrotestosterone are both needed for external and internal development
  8. Dihydrotestosterone
    • converted from 5-alpha reductase and testostone
    • stimulates wolffian duct. also stimulate growth of penis and scrotum in males
  9. Mulllerian inhibiting substance
    • released from testes: causes withering away of ovarium ducts. stops producution.
    • if deactivated both systems will fully develop
  10. Organizational effect
    occur prenatally fore people with long gesteration periods
  11. activational effects:
    triggers frther development in organism
  12. Primary sex characteristics
    • **organizational development**
    • Physical sex characteristics
  13. Secondary sex characteristics
    • **Activational effects**
    • develop with puberty
    • Female: widening of hips, body fat, etc
    • Male: muscle growth,

    Behavoir development occurs in animals. humans dont simply react to hormones because of our cognitive ability
  14. Hypothalamic-Pituitary-Gonadal Axis (HPG Axis)
    Starts from Hypothalums...ends in Gonads
  15. Hormones from Hypothalamus
    • Directly releases posterior putuitary horomns
    • --vasopressin
    • --oxytocin

    gonadotropin-releasing hormone
  16. Hormones released by Anterior pituitary
    • Gonadotropin hormones
    • --follicle-stimulating hormone (FSH)
    • --luteinizing hormone (LH)
  17. Follicle-stimulating hormone (FSH)
    • Released by the anterior pituitary
    • part of the gonadotropin hormones
    • initial development of egg and sperm in men and women
  18. luteinzing hormone (LH)
    • Released by the anterior pituitary
    • part of teh gonadotropin hormones
    • increases production of progestrone (pregnancy hormone)

    Extreme function in females...LH peaks and stimulates ovulation
  19. Gonads (3 types of hormones)
    • Androgesn (ie testosterone)
    • Estrogesn (ie estradiol)
    • Gestagens (ie progestorone)

    Present in both males and females
  20. Masculination of the brain
    • Aromatize testosterone into estradiol
    • enzyme is Aromatase
    • Alpha fetoprotein
  21. Alpha fetoprotein
    • aids in masculination of the brain
    • binds to circulating estradiol and prevents entry into brain
  22. Medial Preooptic Area (MPA)
    • 1. Intromition
    • 2. Pelvic thrust
    • 3. Ejaculation

    • Involved in regulation of male sexual behavoir
    • More sensitve and stimulated which leads to Intromition (intercoarse)
    • Higher testosteron stimulates MPA
  23. Gordosis Posture
    Signal willngness and acceptance of the BeEEf
Author
Anonymous
ID
74434
Card Set
Biopsychology Test Sexual Development and Behavior
Description
Biopsychology Test Sexual Development and Behavior
Updated