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2022年11月12日 · Your body sheds the thick lining of the uterus, and your period starts. Fertilization. If one sperm does make its way into the fallopian tube and burrows into the egg, it fertilizes the egg. The ...
2023年11月8日 · Monogamy is a relationship with only one partner at a time, rather than multiple partners. A monogamous relationship can be sexual or emotional, but it’s usually both. Many modern relationships ...
2022年11月27日 · GERD. It's a condition that makes stomach acid wash back up into the esophagus, a tube that leads into your throat. The main symptom is heartburn, but GERD can also weaken your voice. Stomach acid ...
2023年3月3日 · By the end of the third month of pregnancy, your baby is fully formed. Your baby has arms, hands, fingers, feet, and toes and can open and close its fists and mouth. Fingernails and toenails are ...
Adenosine Deaminase Severe Combined Immunodeficiency (ADA-SCID) ADHD in Children. Adult Vaccines. Aganglionic Megacolon. Agenesis of Commissura Magna Cerebri. Agenesis of Corpus Callosum. Age ...
2023年8月22日 · Stress and Anxiety. Intense emotions can trigger the release of hormones that speed up your heartbeat. Your body gets ready to face a threat, even if you're not in danger. Panic attacks are ...
