嬰兒出生時大約有270根骨頭,其中許多骨頭後來會融合成成年人的206根。肝臟即使失去高達70%的質量也能再生。角膜從空氣中獲取氧氣,而非血管。胃酸非常強,胃內膜必須每天再生。大多數成年人體內約有55%是水,比例因年齡和性別而異。由於軟骨變化,鼻子和耳朵會持續生長。咬肌可以產生極強的咬合力。黃色表示癒合的最後階段,因為血紅蛋白會分解。中耳的鐙骨是人體最小的骨頭。成人小腸平均長度為20-23英尺。雞皮疙瘩有助於保存熱量——這是人類體毛較多時的進化遺留物。大腦即使在休息時也消耗身體約20%的能量。大多數人有大約10,000個味蕾,它們經常再生。指紋圖案是由子宮內的隨機壓力形成的,使其獨特。耳垢保護和潤滑耳道。人類和香蕉有驚人的基因相似性。由於血液供應豐富,舌頭和口腔癒合得非常快。濕頭髮吸收更多光線,使其看起來更黑。消化從口腔開始,歸功於唾液中的酶。粒線體被稱為細胞的發電廠。大約一半的家庭灰塵來自脫落的皮膚細胞。皮膚大約每28天完全更新一次。血紅蛋白含有鐵,氧化時會變成紅色。神經受壓會干擾信號,導致刺痛或麻木。肝臟是最大的內部器官,對排毒至關重要。心臟平均每天跳動約100,000次。琺瑯質一旦受損就無法再生。打嗝源於橫膈膜的突然收縮。眨眼大約需要0.1秒——非常快。腳底有數千個汗腺,比任何其他區域都多。皺紋是神經系統的反應,旨在改善抓握力。眼睛的顏色取決於虹膜中的黑色素水平。人類可以辨別多達1兆種氣味。小腦有助於協調運動和平衡。咕咕聲來自肌肉在消化道中移動食物。經典平均值是98.6°F,儘管正常範圍有所不同。眼淚含有鈉,使其嘗起來有鹹味。你的身體每秒產生大約200萬個紅血球。尾骨是早期人類有尾巴時的遺留物。你的肚臍可以包含數百種獨特的細菌物種。You scored 0 out of 40You scored 1 out of 40You scored 2 out of 40You scored 3 out of 40You scored 4 out of 40You scored 5 out of 40You scored 6 out of 40You scored 7 out of 40You scored 8 out of 40You scored 9 out of 40You scored 10 out of 40You scored 11 out of 40You scored 12 out of 40You scored 13 out of 40You scored 14 out of 40You scored 15 out of 40You scored 16 out of 40You scored 17 out of 40You scored 18 out of 40You scored 19 out of 40You scored 20 out of 40You scored 21 out of 40You scored 22 out of 40You scored 23 out of 40You scored 24 out of 40You scored 25 out of 40You scored 26 out of 40You scored 27 out of 40You scored 28 out of 40You scored 29 out of 40You scored 30 out of 40You scored 31 out of 40You scored 32 out of 40You scored 33 out of 40You scored 34 out of 40You scored 35 out of 40You scored 36 out of 40You scored 37 out of 40You scored 38 out of 40You scored 39 out of 40You scored 40 out of 40
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NextNext QuizIncorrectCorrectGenerating your resultRetryOops, Quizday rookie! Don't worry, even the greatest quiz masters had to start somewhere. You may have stumbled this time, but every mistake is an opportunity to learn and grow. Keep on quizzing, Quizday newbie, and let your thirst for knowledge guide you towards greatness!Hooray for trying, Quizday explorer! You may not have aced the quiz this time, but you're like a brave adventurer trekking through uncharted territories. Keep exploring, Quizday fan, and let your inquisitive spirit be your guide to the riches of knowledge. Who knows what wonders await you on your next quiz quest?Great effort, Quizday adventurer! You're like a curious cat exploring the world of trivia with wide-eyed wonder. Keep on quizzing, Quizday fan, and let your enthusiasm for knowledge propel you towards success. Remember, even the most experienced quiz champions started somewhere. You're on your way to greatness!Hooray for taking the Quizday challenge! 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你以為你真的了解自己的身體嗎?再想想看。人體充滿了奇特、令人驚訝,甚至難以置信的事實,而大多數人從未聽說過。在這個測驗中,你將面對一些問題,揭示你的骨骼、器官、感官和日常功能是多麼的奇異。從古怪的解剖學到奇特的生物反應,每個問題都將考驗你所認為的知識,並揭露你所不知道的。無論你是個冷知識愛好者、科學迷,還是僅僅對自己的身體感到好奇,都準備好大吃一驚吧。讓我們看看你是否能接受真相!








