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two types of organs in repro tract:
- organs make up the system
- glands that regulate the system
- suspends the uterus and ovaries from above
- contains blood, lymph and nerves
- enlarges during pregnancy so more blood can flow through
- made of CT and vascular tissue
- external opening of repro tract
- protective barrier to keep foreign substances out
- barrier protecting the uterus from the outer environment
- seals off with a plug during pregnancy
- important in AI
What causes changes in the cervix?
What is the organ of pregnancy?
What happens in the uterus?
- implantation and development of the fetus occurs here
- ovum bounces around until its big enough to implant into lining
- relatively large uterine body
- short, poorly developed uterine horns
- layer of uterus that holds broad ligament
- provides physical support
- blood, lymph, nerves
- physical support
- encases uterus
- clears fluid during estrus
- mobility and fixatior of embryo
- expulsion of fetus
- separates mesometrium and perimetrium
- hormones and vascular support
- has folds
- expands surface area
- suspended from broad ligament below the 4th and 5th vertebrae
- bean shaped with ovulation fossa
- varies in size according to degree of activity
tube that links the ovary to the uterus
- collects ova from ovulation fossa
- "catcher's mitt"
passage of ova to fertilization site
- capacitation of sperm
- passage of embryo to the uterus
Where does fertilization occur?
at the junction of the ampulla and the isthumus
Convex side of the ovary:
- are of attachment to the abdominal cavity
concave side of the ovary:
- contains ovulation fossa
- where ovary releases ovum
- located inside ovary
- primary source of estrogen
- contains the oocyte
types of cells found in follicles:
- granulosa: inhibit premature maturation of ova; synthesize estrogen precursor
- theca: convert precursor to estrogen
- aka yellow bodies
- source of progesterone
- comprised of differentiated thecal and granulosal cells
How long does it take a Corpus Luteum to fully develop?
- 6 days
- after 6-7 days, prostaglandin can regrees the CL
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