Educational Content ,From Fertilization To Childbirth | 3d medical animation | by Dandelion Team

00:08:52
https://www.youtube.com/watch?v=s-Xpa5UZAZs

概要

TLDRThe video explains the steps of fertilization and early embryonic development. It describes how sperm navigate through cervical mucus during ovulation, the fertilization process in the fallopian tubes, the formation of the zygote, and its development into a blastocyst. After the blastocyst implants in the uterus, it signals pregnancy, leading to the development of the embryo and major systems like the circulatory system. By weeks 9 to 12, the embryo is referred to as a fetus, with recognizable features and developing systems, including reproductive organs.

収穫

  • 🌊 Sperm swim through thinner cervical mucus during ovulation.
  • 🧬 Fertilization occurs in the fallopian tubes at the uterotubal junction.
  • ⏳ Sperm can survive up to 5 days in the female reproductive tract.
  • 🔬 A zygote is formed when the sperm and egg combine; it's the earliest developmental stage.
  • 🔄 The blastocyst implants into the uterine wall, starting the pregnancy.
  • 🕔 Home pregnancy tests can detect pregnancy around week five.
  • 🩸 Early development includes forming the circulatory system and brain.
  • 👶 By weeks 9 to 12, the embryo is called a fetus with developing features.

タイムライン

  • 00:00:00 - 00:08:52

    During ovulation, cervical mucus becomes thinner and more alkaline, facilitating sperm movement towards the egg. Post ovulation, the egg is released and travels to the fallopian tube where fertilization occurs. The journey for sperm to the egg is challenging, filtering out the healthiest sperm to ensure optimal chances for a healthy baby. Initial sperm may not fertilize, as they can survive up to 5 days, with the fertilization process requiring the sperm to penetrate multiple layers of the egg. Once fertilization happens, the zygote is formed, marking the earliest stage of development with a complete set of chromosomes inherited from both parents. It then becomes a blastocyst and travels to the uterus, embedding into the uterine wall for nutrient and oxygen supply, beginning the pregnancy cycle.

マインドマップ

ビデオQ&A

  • What happens to the cervical mucus during ovulation?

    It becomes thinner and less acidic, allowing sperm to pass through more easily.

  • Where does fertilization occur?

    Fertilization occurs in the fallopian tubes, specifically at the uterotubal junction.

  • How long can sperm survive in the female reproductive tract?

    Sperm can survive for up to 5 days in the female reproductive tract.

  • What is a zygote?

    A zygote is the combined sperm and egg, representing the earliest developmental stage after fertilization.

  • What is the role of the blastocyst?

    The blastocyst hatches from its shell and implants into the uterine wall to secure oxygen and nutrients.

  • When can a home pregnancy test detect pregnancy?

    A home pregnancy test may be able to produce a positive result at week five of pregnancy.

  • What major systems begin to form in early pregnancy?

    The circulatory system, brain, and spinal cord begin to form in the early weeks of pregnancy.

  • What happens by week 9 to 12 of pregnancy?

    The embryo is termed a fetus, having developed recognizable facial features and major body systems.

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    swim through the layers of cervical
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    mucus that guard the entrance to the
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    uterus during ovulation this barrier
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    becomes thinner and changes its acidity
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    creating a friendlier environment for
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    the sperm on the other side after
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    releasing the egg at about day 14 of the
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    period the egg arrives at a specific
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    portion of the tube called The ular isic
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    Junction it rests for another 30 hours
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    fertilization occurs in this portion of
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    the
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    tube once the sperm has entered the
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    uterus contractions Propel the sperm
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    upward into the fallopian tubes to meet
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    the waiting egg sperm must travel from
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    the vagina to the Fallopian tubes a
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    tough Journey that few sperms survive
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    this process may be Nature's Way of
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    allowing only the healthiest sperm to
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    fertilize the egg to provide the best
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    chances of having a healthy baby
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    the first sperm enter the tubes a few
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    minutes after ejaculation but however
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    the first sperm are not likely to
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    fertilize the egg modal sperm can
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    survive in the female reproductive tract
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    for up to 5
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    days the magic happens in the Fallopian
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    tubes the fallopian tube pushes the egg
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    towards the uterus cyia pushed the sperm
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    towards the egg also the surrounding
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    cells of the egg produce a chemical that
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    attract
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    [Music]
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    sperm the sperm first burrow through the
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    cells of the corona
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    radiata then upon contact with the Zona
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    paluca the sperm bind to The receptors
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    in the Zona paluca then the enzyme
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    filled cap of the sperm called the
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    acrosome releases its stored digestive
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    enzymes finally the sperm must fuse with
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    the egg plasma membrane this event
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    causes the egg membrane to change and
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    prevent other sperm from attaching to
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    it now attached the sperm's nucleus
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    where the chromosomes are stored enters
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    the egg cell looking for the egg's
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    nucleus egg combines genetic material
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    with the sperm to create a full set of
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    chromosomal DNA with 23 pairs of
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    chromosones that contain a unique copy
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    of half the genes of the parent
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    Source this is the blueprint for a whole
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    new unique person that instantly
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    determines gender hair color eye color
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    and many other
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    characteristics the combined sperm and
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    egg is called a zy goe it is the
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    earliest developmental stage it divides
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    rapidly in the days following
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    fertilization the zygote then travels
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    down the fallopian tube to the
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    uterus after fertilization the zygote
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    continues to divide and morph into a
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    blastocyst ball of 16 cells approxim o
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    imately 5 to 6 days after fertilization
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    it is smaller than the tip of a
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    ballpoint
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    pin only 20% to 30% of fertilized eggs
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    will reach the
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    blastoisinite the blastocyst hatches out
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    of its shell
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    and burrow into the uterine wall
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    endometria which serves as the source of
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    oxygen and
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    nutrients about 4 weeks from the
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    beginning of the last period near the
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    next period the blastocyst has begun to
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    produce the pregnancy hormone to tell
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    your ovaries to stop releasing
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    eggs from then on the menstrual cycle
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    pauses the blastocyst is called called
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    an embryo
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    now home pregnancy test might be able to
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    get a positive
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    result at week five the circulatory
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    system brain and spinal cord are
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    beginning to
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    form and the tiny heart will start to
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    beat the baby's heart beats about 54
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    million times before birth the placenta
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    provides oxygen and nutrients to the
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    growing baby and removes waste products
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    from the baby's blood via the umbilical
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    cord the nose mouth and ears are
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    starting to shape at week
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    six at Weeks 7 and 8 the embryo has
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    doubled in size since last
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    week's little hands and feet start to
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    grow at week 9 to 12 of pregnancy the
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    embryo is called a fetus
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    the baby is almost fully formed and has
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    completed the most critical portions the
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    facial features are more recognizable
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    the fetus's head is rotated and bent
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    towards the chest and he can
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    occasionally touch his
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    face the diaphragm muscles start to grow
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    the reproductive circulatory and urinary
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    systems are all at an advanced stage of
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    development the fetus will urinate in
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    the amniotic
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    sac it is a sign of the proper
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    functioning of the fetus's body if the
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    baby is a girl her ovaries contain
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    millions of eggs if the fetus is a boy
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    his testicles will already start
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    producing testosterone male sex hormone
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    which is necessary for the development
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    of his reproductive system she or he is
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    about 5 cm in size and 14 G in weight
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    she or he is growing and maturing until
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    ready to birth
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タグ
  • fertilization
  • cervical mucus
  • fallopian tube
  • zygote
  • blastocyst
  • embryo
  • fetus
  • pregnancy
  • reproductive system
  • development