傳統的平均體溫是 37°C (98.6°F),雖然現代研究顯示個人的正常體溫通常略低,約在 36.5–37.5°C 之間。皮膚在表面積和重量上都是最大的器官,約佔體重的 15%,並覆蓋全身。紅血球含有血紅蛋白,它在肺部結合氧氣並將其輸送到全身組織。大多數成年人有 206 塊骨頭。嬰兒出生時約有 270–300 塊骨頭,隨著成長會逐漸融合。成年人通常有 32 顆恆牙:8 顆門齒、4 顆犬齒、8 顆前臼齒和 12 顆臼齒(包括智齒)。鼻子和耳朵中的軟骨在一生中會繼續緩慢生長,這就是為什麼它們在老年人身上看起來會比較大。人類有兩個肺——左肺稍微小一點,是為了給心臟騰出空間。鼻腔中的嗅覺受體檢測氣味分子並將信號發送到大腦。O型陰性血(O-)通常可以提供給幾乎任何受血者,因為它缺乏A、B和Rh抗原。心臟有兩個心房(上腔室)和兩個心室(下腔室),它們共同運作以泵送血液。牙釉質是人體中最硬的物質,在摩氏硬度標準上排名約為5——比骨骼更硬。大多數成年人擁有約5公升血液,約占體重的7–8%。每隻手有8塊腕骨、5塊掌骨和14塊指骨,共計27塊骨頭。股骨(大腿骨)是人體中最長且最強壯的骨頭,支撐著身體的重量並使行走和跑步成為可能。胰臟產生胰島素(和升糖素)以調節血糖水平。喉部包含聲帶,通常被稱為喉嚨(voice box)。中耳內的鐙骨(stirrup bone)是最小的骨頭,長度僅幾毫米。頭骨保護大腦,脊柱保護脊髓。大多數人有 12 對肋骨(總共 24 根),儘管有些人有多出一對。白血球是免疫系統的關鍵組成部分,負責識別並摧毀病原體。這兩個腎臟過濾血液中的廢物和多餘液體以形成尿液。橫膈膜是一塊圓頂狀的肌肉,透過收縮和放鬆來擴張和縮小胸腔以進行呼吸。虹膜是眼睛的有色部分,負責調節瞳孔大小以控制光線進入。通常引用的數字大約是 600–650 塊骨骼肌,但確切數量取決於分類方式。「麻筋」實際上是運行在肘部附近的尺神經;撞擊它會產生刺痛感。血小板在受傷部位黏在一起形成血栓並止血。肝臟處理毒素、藥物和代謝廢物,有助於保持血液清潔。五種基本味覺是甜、酸、鹹、苦和鮮味。食道是一條肌肉管道,透過蠕動將食物移至胃部。小腦有助於協調運動、姿勢和平衡。成年人的身體通常含有 50–60% 的水分,嬰兒較高,老年人則略低。鎖骨是連接肩膀和胸骨的長而細的骨頭。消化後的食物中,大部分的營養吸收發生在小腸。人類的胃是單腔器官(不同於某些擁有多個胃室的動物)。血紅蛋白是紅血球中一種含鐵的蛋白質,與氧氣結合時呈現紅色。腦垂腺透過釋放關鍵激素來控制許多其他內分泌腺。黑色素由黑色素細胞產生,決定了皮膚、頭髮和眼睛的顏色,同時能抵禦紫外線。膽囊儲存並濃縮由肝臟產生的膽汁,直到脂肪消化需要時為止。大多數成年人的正常靜息心率在每分鐘 60 到 100 次之間。手和腳加起來包含超過身體一半以上的骨骼(手部有 54 塊,腳部有 52 塊)。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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你以為你了解人體嗎?大多數人每天都在地球上最複雜的機器之一中走動,卻沒有真正了解它的運作方式。這個測驗測試關於骨骼、器官、血液、感官的日常常識,以及幾乎每個人在日常生活中都會遇到的驚人事實。問題從簡單熟悉的開始,然後在保持趣味和易懂的同時逐漸增加挑戰。不需要醫學學位——只需要對你居住的身體感到好奇即可。
無論你是健康愛好者、家長、健身愛好者,或者只是曾經想知道為什麼會起雞皮疙瘩,或者你到底有多少塊骨頭,這個測試都將揭示你對自己的了解程度。誠實回答,從每個解釋中學到新知識,看看你的水平如何。記住:如果你答錯超過 10 題,你可能幾乎不了解自己的身體。準備好找出答案了嗎?
答對 31–40 題
你以為你了解人體嗎?大多數人每天都在地球上最複雜的機器之一中走動,卻沒有真正了解它的運作方式。這個測驗測試關於骨骼、器官、血液、感官的日常常識,以及幾乎每個人在日常生活中都會遇到的驚人事實。問題從簡單熟悉的開始,然後在保持趣味和易懂的同時逐漸增加挑戰。不需要醫學學位——只需要對你居住的身體感到好奇即可。
無論你是健康愛好者、家長、健身愛好者,或者只是曾經想知道為什麼會起雞皮疙瘩,或者你到底有多少塊骨頭,這個測試都將揭示你對自己的了解程度。誠實回答,從每個解釋中學到新知識,看看你的水平如何。記住:如果你答錯超過 10 題,你可能幾乎不了解自己的身體。準備好找出答案了嗎?