Human Reproduction 140

Card Set Information

Author:
Anonymous
ID:
7264
Filename:
Human Reproduction 140
Updated:
2010-02-18 04:34:19
Tags:
Central Nervous System
Folders:

Description:
Central Nervous System
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user Anonymous on FreezingBlue Flashcards. What would you like to do?


  1. The Pituitary Gland (HYPOPHYSIS) has 2 parts, posterior and anterior, what are the names?
    • neurohypophysis: Posterior Pituitary Gland
    • Adenohypophysis: Anterior Pituitary Gland
  2. Melatonin is produced by the PINEAL GLAND: It causes?
    • Mild sedative effect
    • Dark exposure increases secretion of Melatonin
    • Light exposure supresses secretion of melatonin
    • At high enough doses can inhibit the Reproductive gonadal systems in males and females
    • Levels of melatonin in blood of prepubertal children drop markedly just before the onset of puberty
    • Involved with Circadian Rhythims
  3. HYPOTHALAMUS:
    PITUITARY GLAND
    PINEAL GLAND
  4. HYPOPHYSIS:
    Posterior Pituitary Gland
    Anterior Pituitary Gland
    • PostPit: Oxytocin, Vasopressin
    • AntPit: FSH,LH,PRL,Opiods
  5. The Anterior Pituitary is made up of?
    • Pars Distalis (MAIN)
    • pars intermedia
    • pars tuberalis
  6. Neurosecretory neurons:
    • -lie in hypothalamus
    • -axons extend into posterior pituitary gland
    • -synthesize large amounts of neurohormones in the cell bodies
    • -neurohormones packaged into large granules and released into spaces adjacent to axon ending
    • -include OXYTOCIN and VASOPRESSIN
  7. Effects of Oxytocin secreted by Posterior Pituitary Gland:
    • -stimulates contractile cells of mammary glands so that milk can eject from nipples
    • -Causes smooth muscle in uterus to contract to facilitate labor and childbirth
  8. effects of Vasopressin secreted by Posterior Pituitary gland:
    • -Causes kidneys to retain water
    • -Causes blood vessels to contrsict and blood pressure to rise
  9. Anterior Pituitary Gland Produces:
    GH, ACTH ,TSH ,PRL, OPIODS ,FSH ,LH
    • -GH: growth hormone LARGE PROTEIN stimulates growth by supporting incorporation of amino acids into proteins
    • -ACTH: adreno-corticotropin hormone POLYPEPTIDE HORMONE that stimulates adrenal gland to secrete steroid hormones
    • -TSH: thyrotropin Stimulates thyroid hormone to secrete thyroid hormones
    • -PRL:Prolactin Supports mammary glands to become functional and secrete milk
    • -OPIODS: natural pain killers
    • -FSH: Follicular stimulating hormone STIMULATES ovaries to produce mature germ cells, estrogen, and stimulates testes to produce sperm
    • -LH: Luteinizing Hormone STIMULATES ovaries to secrete female ssex hormones (progesterones and estrogens), induces egg release from ovary, and stimulates intersititial cells int he testes to synthesize and secrete androgens
  10. Hypothalamic-Anterior Pituitary Connection:
    -NEUROHORMONES are released at median eminence in Hypothalamus and transported to pars distalis of anterior pituitaryvia the hypothalamo-hypophysial portal vascular system.
  11. RH: releasing hormone
    RIH : release inhibiting hormone
    INCREASES output of specific adenohypophysial hormone

    DECREASES output of specific adenohypophysial hormone
  12. RH HORMONHYPOTHALAMUS:
    GnRH
    PRH
    • INCREASES release of FSH and LH from adenohypophysis
    • INCREASES release of prolactin from adenohypophysis
  13. PROLACTIN:
    • -Estrogen increases the response of prolactin secreting cells in anterior pituitary
    • -Prolactin supports milk synthesis in the mammary glands
    • -Abnormally high levels of prolactin associated with certain types of infertility
  14. when estrogen and progesterone rise above the set point:
  15. NEGATIVE AND POSITIVE FEEDBACK IN PITUITARY FUNCTION:
  16. When Estrogen and Progesterone Levels are below the set point:
  17. KNOW THIS GRAPH:
  18. Estrogen
    <setpoint
  19. ESTROGEN
    >SET POINT
  20. ESTROGEN
    >>WAY GREATER THAN SET POINT
  21. SUMMARY OF ESTROGEN LEVELS
  22. ANDROGEN LEVELS:
  23. GONAD GLYCOPROTEIN HORMONES:
    • GONADS release glycoprotein hormones that influence Gonadotropin secretion
    • (INHIBIN) acts on pituitary to supress the secretion of FSH
    • (FOLLISTATIN) binds to actifvin and blocks its action
  24. ESTROGEN EFFECTS
  25. ANDROGEN EFFECTS
  26. PROGESTERONE EFFECTS

What would you like to do?

Home > Flashcards > Print Preview