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  2. Souffle (heart sound) - Wikipedia

    en.wikipedia.org/wiki/Souffle_(heart_sound)

    Funic souffle (also known as funicular or fetal souffle), is a blowing sound heard in synch with fetal heart sounds, and may originate from the umbilical cord. It has also been described as a sharp, whistling sound that is synchronous with the pulse of the foetus, usually heard during the second trimester of pregnancy (13–28 weeks). [3]

  3. Voice change - Wikipedia

    en.wikipedia.org/wiki/Voice_change

    Most of the voice change begins around puberty. [4] Adult pitch is reached 2–3 years later, but the voice does not stabilize until the ages of 21-25 It usually happens months or years before the development of significant facial hair. Under the influence of sex hormones (namely testosterone), the voice box, or larynx, grows in both sexes ...

  4. Prenatal perception - Wikipedia

    en.wikipedia.org/wiki/Prenatal_perception

    Prenatal perception is the study of the extent of somatosensory and other types of perception during pregnancy.In practical terms, this means the study of fetuses; none of the accepted indicators of perception are present in embryos.

  5. Signs and symptoms of pregnancy - Wikipedia

    en.wikipedia.org/.../Signs_and_symptoms_of_pregnancy

    Pregnancy symptoms may be categorized based on trimester as well as region of the body affected. Each pregnancy can be quite different and many people do not experience the same or all of the symptoms. If a person is concerned about their symptoms they should be encouraged to speak with an appropriate healthcare professional. [1]

  6. Maternal physiological changes in pregnancy - Wikipedia

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

    There are many physiologic changes that occur during pregnancy that influence respiratory status and function. Progesterone has noticeable effects on respiratory physiology, increasing minute volume (the amount of air breathed in and out of the lungs in 1 minute) by 40% in the first trimester via an increase in tidal volume alone, as the ...

  7. Timeline of human prenatal development - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_human_prenatal...

    Embryonic age: Week nr 1. 0 (whole) weeks old. 17 days from fertilization. Fertilization of the ovum to form a new human organism, the human zygote. (day 1 of fertilization [1]) The zygote undergoes mitotic cellular divisions, but does not increase in size. This mitosis is also known as cleavage.

  8. Estimated date of delivery - Wikipedia

    en.wikipedia.org/wiki/Estimated_date_of_delivery

    Using the example above, 8 May 2020 is a Friday. The calculated date (15 February) is a Monday; adjusting to the closest Friday produces 12 February, which is exactly 280 days past 8 May. The calculation method does not always result in 280 days because not all calendar months are the same length; it does not account for leap years.

  9. Calculator (Apple) - Wikipedia

    en.wikipedia.org/wiki/Calculator_(Apple)

    A calculator function has been included with iOS since its launch on iPhone [3] and iPod Touch. [4] However, iPads have never had a first-party calculator application, until the announcement of iPadOS 18 in 2024. A native calculator function was added to the Apple Watch with watchOS 6, which included a dedicated button for calculating tips. [5]

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