Advanced A&P chapter 28 practice questions
sperm become motile and fully functional when they have undergone
capacitation
what is formed from the remaining follicle cells that are not ovulated with the secondary oocyte
corpus luteum
the hormone that promotes spermatogenesis along the seminiferous tubules is
follicle stimulating hormone (FSH)
each gamete produced my meiosis is
haploid, meaning it contains only one member of each homologous chromosomes
what hormone is produced by the nurse cells depresses the formation of FSH and provides a negative feedback mechanism for the control of spermatogenesis?
inhibin
which cells in the testes are responsible for producing testosterone and other androgens?
interstitial cells
what happens to the chromosome number during meiosis
it is reduced by half
what is the hormone that directly stimulates testosterone production
luteinizing hormone (LH)
homologus chromosomes separate during
meiosis I
what statement about oogenesis mentions the one characteristic that is the same in spermatogenesis and oogenesis
meiosis in oogenesis reduces the chromosome number in half
what are the three stages of sequential stages of the uterine cycle
menses, proliferative phase, secretory phase
Mitosis and Meioisis
mitosis creates genetically identical cells, whereas meiosis creates genetically unique cells
during oogenesis, meiosis produces how many functional gametes?
one
the process of oogenesis produces three nonfunctional polar bodies that eventually disintegrate, plus
one functional ovum
the principal hormone that prepares the uterus for pregnancy is
progesterone
what hormone does the corpus luteum primarily produce?
progesterone
Meisosis I
reduces the amount of chromosomes in half, producing haploid cells
Spermiogenesis
spermatids mature into a single sperm
Which cells in the seminiferous tubules regularly undergo mitosis?
spermatogonia
what is the correct order in which are cells spermatogenesis?
spermatogonium, a primary spermatocyte, a secondary spermatocyte, a spermatid, a sperm
events of fertilization
two haploid gametes (egg and sperm) combine to make the diploid zygote
mitosis of oogonium
unlike spermatogonia, the oogonia or female reproductive stem cells, complete their mitotic divisions before birth
what female reproductive structure receives the ovum from the ovary during ovulation
uterine tube
which hormone causes the development of secondary follicles into tertiary follicles
FSH
Spermatogenesis
Formation of sperm
the rupture of the follicular wall and ovulation are caused by
a sudden surge in LH concentration
for sperm to be able to fertilize an egg, it must undergo capacitation, which involves
-mixing of sperm with fluid from the seminal vesicles -sperm dealing with the conditions of the female reproductive tract
nurse cells function in males
-support of spermiogenesis -secretion of inhibin and androgen binding protein -maintenance of the blood testis barrier
sister chromatids separate during
Meiosis II
Meiosis II in oogenesis
Occurs at fertilization, a second polar body forms and the fertilized oocyte is then called a mature ovum
Meiosis I in oogenesis
Occurs once a month after puberty; from one primary oocyte into one polar body and one secondary oocyte
in a 28 day cycle, estrogen peaks at
day 14