Integrative Biology 140

Which of the following is false about steroid binding globulins?
a. steroid binding globulins are carrier protiens that attach to steroid hormones
b. bound steroids affect target cells
c.2-3% of estradiol is free in the blood
d.concentration of steroid binding proteins change with pregnancy and obesity
e. binding globulins regulates the availability of steroid hormones

Which of the following is false about melatonin?
A.high doses can stimulate reproductive gonadal systems in males and females
B.levels of melatonin in blood of pre-pubertal chuldren drop markedly just before the onset of puberty
C.causes a mild sedative effect
D.dark exposure increases melatonin secretion
E.synthesized by pineal gland in central nervous system

How many ovarian follicles are present at birth in females?
a.100,000
b.200,000
c.300,000
d.1-2 million
e. 10-20 million

what is the main reason for the loss of follicles from birth to menopause?
a.ovulation
b.menstruation
c.follicular atresis
d.increase in FSH
e.increase in LH

FSH supports the rapid growth of tertiary follicles through which mechanism?
a.stimulates progesterone in granulosa cells via the delta 5 pathway
b.stimulates progesterone production in granullosa cells with the delta 4 pathway
c.stimulates estrogen production in granulosa cells via the delta 5 pathway
d.stimulates estrogen production in the theca cells via the delta 5 pathway
e.stimulates estrogen production in luteal cells cia the delta 4 pathway

LH supports the rapid development of grafian follicles through which mechanism?
a. stimulates profesterone production in granulosa cells via the delta 5 pathway
b.stimulates progesterone production in granulosa cells via the delta 5 pathway
c.stimulates estrogen production in granulosa cells via the delta 4 pathway
d.stimulates progesterone production in the theca cells via the delta 5 pathway
e.stimulates progesterone production in luteal cells cia the delta 4 pathway

What may indicate that a woman is ovulating?
a. premenstrual syndrome
b.Mittelschmerrz
c.high levels of progesterone
d.thick non stretchy cervical mucus
e.all of the above

The entire process of spermatogenesis to spermiation takes how long?
a.6-7 days
b. 10-12 days
c.65-75 days
d.100-120 days
e.300-350 days

Human adult males are constantly producing sperm at a rate of
a.1/sec
b.10/sec
c.100/sec
d.1000/sec
e.10,000/sec

Which type of cell in the testes secrete inhibin?
a.lutica vaginalis
b.leydig cells
c.male germ cells
d.sertoli cells
e.luteal cells

Which type of cell produces 95% of the testostorone in males?
a.tunica vaginalis
b.leydig cells
c.male germ cells
d.sertoli cells
e.luteal cells

Which type of cells form tight junctions that provide the blood-testes border?
a.tunica vaginalis
b.leydig cells
c.male germ cells
d.sertoli cells
e.luteal cells

Which of the following increases the risk for developing prostrate cancer?
a.diet rich in saturated fats from meat and dairy products
b.diet rich in tomato paste
c.diest rich in fruits and vegetables
d.frequent ejaculations through sex
e.frequent ejaculation through masturbation

Which of the following is NOT true about estrogen?
a.increases fluid retention in breasts
b.levels are higher than progesterone in luteal phase
c.causes positive feedback on GnRH in late-follicular phase
d.produced through delta gour and delta 5 pathway
e.

what is the correct order of events in the typical female menstrual cycle?
a.LH surge, positive feedback of estradiol, ovulation
b.positive feedback of estradiol, ovulation, LH surge
c.ovulation,LH surge, positive feedback of estradiol
d.positive feedback of estradiol, LH surge, ovulation
e. LH surge, ovulation, positive feedback of estradiol