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31 Cards in this Set

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Name three structures that supply fluid forsperm.
seminal vesicle, prostate gland, bulbo-urethral gland
testis
produces sperm
seminiferous tubule
inside the testes, laydig cells between tubules,
sertoli
inside semineferous tubule
oviduct=
fellopian tube
budding
asexual reproduction in hydra
fragmentation
asexual reproduction in planaria, sponge
parthenogenesis
asexual reproduction in which fertilized eggs turn to female, unfertilized eggs turn to males
What does sexual reproduction require?
the production and fusion of gametes
embryo
a living organism which needs to secure food, rid itself of waste, and exchange gases (breathe)
embryology
the study of the development of an embryo to adult form
metamorphosis
For frogs and insects, once the egg survives predation and begins to develop, it goes through many physical forms and changes.
cleavage
mitotic divisions in development
complete metamorphosis
1. egg
2. larval
3. pupil (cell specialization)
4. adult
incomplete metamorphosis
1. egg
2. nymph (smaller version of adult)
3. adult
morphogenesis
what embryos undergo (changes)
shells
give embryos within the shell a better chance of survival than embro which must develop without the protection
Chorion
controls permeability to egg, is permeable to gas but not to water
yolk sac
~contains yolk=embryo's food
~contains blood vessels for transport
allantois
~sac which fills with waste products
~contains blood vessels for transport of waste from embryo to chorion
amnion
~membrane enclosing amniotic fluid which protects against dehydration and jols
blastocoel
body cavity
rotational cleavage
results in a morula, then a blastocyst
grastrulation
leads to a three-layered embryo inside wall of uterus
What system is internal development controled by?
endocrine
What is secreted when [estrogen] gets high enough?
LH (luteineizing hormone)
FSH
follical stimulating hormone

secreted by pituaitary gland on day 6-14, follicular phase

stimulates grrowth of primary oocytes to complete Meiosis I
Luteal phase
Day 15-28

LH is secreted to the ovaries
ovulation
secodary oocyte and polar bodies are released (3 days)
Corpus Luteum
left over follicle cells from ovulation recombine in the ovary to make this, secretes progesterone
progesterone
secreted from the corpus luteum to the uterus to help uterus maintain extra layers for about 12 days