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decribe how sperm cells are formed
spermatogenesis is the process that produces sperm cells by division of the spermatogenic cells in the germinal epithelium
what is the function of the scrotum
to hold the testes and allow movement to control tempeture so that viable sperm may be produced
what is the function of testostrone
the maturation of male reproductive organs, development of heavy bones, broad shoulders and the deepening voice
what are the parts of the vulva
mons pubis, clitoris, labium major and minor, urethral orifice, vaginal orifice, and perineum
how are fsh lh estrogen and progesterone involved in ovarian and menstrual cycles
FSH- OVARIAN
stimulates growth of egg and production of estrogen
MENSTRUAL
development of primary egg during first few days
LH- OVARIAN
allows the mature egg to be relased
MENSTRUAL
causes egg to be released from overy
PROGESTERONE- OVARIAN
pre pairs the egg to be fertilized
MENSTRUAL
if egg not fertilized levels lower
how do hormonal birth control methods work
use high levels of progesterone and a low level of estrogen to prevent ovulation
how do sperm cells reach the seconday oocyte
after deposit the go in the uterine tubes. then are attracted to the secondary oocyte and they dissolve the glue like substance
what hormonal changes are triggered by the presence of an implanted embryo
hcg is released which causes estrogen and progesterone to increase which prevents the release of gnrh
what composes the placenta and what is its function
composed of embryonic and maternal tissues and it provides an interface between embro and mother to transport blood and nutrients
how does the increased estrogen level contribute to the onset of labor
as estrogen increases it over rides progesterone which allows the body to start contractions
what circulatory changes occur in a newborn infant
ambilical cord constricts and stops blood from mother to child and the childs pulmonary circulation becomes functional
how do hormones control lactation
high levels of estrogen and progesterone stimulate mammary glands and breast enlargement in prep for milk production
what distinguishes the dominant/recessive pattern inheritance
dominant traites are always expressed recessive are expressed when both recessive alleles are pressent
Author
nissansarebetter88
ID
151411
Card Set
final
Description
final
Updated
5/1/2012, 3:34:01 PM
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