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  2. Placenta - Wikipedia

    en.wikipedia.org/wiki/Placenta

    The placenta (pl.: placentas or placentae) is a temporary embryonic and later fetal organ that begins developing from the blastocyst shortly after implantation.It plays critical roles in facilitating nutrient, gas and waste exchange between the physically separate maternal and fetal circulations, and is an important endocrine organ, producing hormones that regulate both maternal and fetal ...

  3. Female reproductive system - Wikipedia

    en.wikipedia.org/wiki/Female_reproductive_system

    The human female reproductive system is made up of the internal and external sex organs that function in the reproduction of new offspring. The reproductive system is immature at birth and develops at puberty to be able to release matured ova from the ovaries , facilitate their fertilization , and create a protective environment for the ...

  4. Placentation - Wikipedia

    en.wikipedia.org/wiki/Placentation

    The placenta can be defined as an organ formed by the sustained apposition or fusion of fetal membranes and parental tissue for physiological exchange. [1] This definition is modified from the original Mossman (1937) [2] definition, which constrained placentation in animals to only those instances where it occurred in the uterus.

  5. Maternal physiological changes in pregnancy - Wikipedia

    en.wikipedia.org/wiki/Maternal_physiological...

    Levels of progesterone and estrogen rise continually throughout pregnancy, suppressing the hypothalamic axis and subsequently the menstrual cycle. The progesterone is first produced by the corpus luteum and then by the placenta in the second trimester.

  6. Menstrual cycle - Wikipedia

    en.wikipedia.org/wiki/Menstrual_cycle

    Menstrual cycle The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that makes pregnancy possible. The ovarian cycle controls the production and release of eggs and the cyclic release of estrogen and progesterone. The uterine cycle governs the preparation and maintenance of the lining of the ...

  7. Fetal circulation - Wikipedia

    en.wikipedia.org/wiki/Fetal_circulation

    The function of these shunts is to bypass the lungs and maintain proper circulation to important fetal tissue. In the fetal stage, the lungs fill with fluid and collapse because the fetus is within the amniotic sac and the placenta is providing the oxygen it needs to grow.

  8. Andrews scores 21 and No. 18 UCLA beats Prairie View A&M 111 ...

    www.aol.com/andrews-scores-21-no-18-050438567.html

    Dylan Andrews scored 21 points, Tyler Bilodeau added 18 and No. UCLA extended its winning streak to nine games with a 111-75 victory over Prairie View A&M on Tuesday night. Eric Dailey scored 14 ...

  9. Mammalian reproduction - Wikipedia

    en.wikipedia.org/wiki/Mammalian_reproduction

    Gestation, called pregnancy in humans, is the period of time during which the fetus develops, dividing via mitosis inside the female. During this time, the fetus receives all of its nutrition and oxygenated blood from the female, filtered through the placenta, which is attached to the fetus' abdomen via an umbilical cord.