Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
31 Cards in this Set
- Front
- Back
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
|