为什么身体里需要一副骨架？
Why does the body need a skeleton?
骨架像头盔和护甲，把大脑、心脏这些软软的重要器官包起来保护。它还让我们能站直、跑步和举手，因为肌肉要挂在骨头上才能用力。
The skeleton acts like a helmet and armor, wrapping soft important organs such as the brain and heart in protection. It also lets us stand, run, and raise our arms because muscles pull on bones to move.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Harrison's Principles of Internal Medicine 第20版,McGraw-Hill,2018
J. Loscalzo et al., Harrison's Principles of Internal Medicine, 20th ed., McGraw-Hill, 2018
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY ISBN 标识 9781259644047（按标识回读: Harrison's prin
#骨骼 #保护
为什么小宝宝头顶有个软软的地方？
Why does a baby have a soft spot on the head?
那是囟门，宝宝出生时头骨还没完全合拢，留一点软软的缝隙让大脑快速长大。随着宝宝长大，这块骨头会慢慢长硬闭合。
That soft spot is called a fontanelle; a baby's skull is not fully joined at birth so the brain can grow quickly. As the baby grows, the bone slowly hardens and closes the gap.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Harrison's Principles of Internal Medicine 第20版,McGraw-Hill,2018
J. Loscalzo et al., Harrison's Principles of Internal Medicine, 20th ed., McGraw-Hill, 2018
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY ISBN 标识 9781259644047（按标识回读: Harrison's prin
#婴儿 #头骨
为什么骨头那么结实？
Why are bones so strong?
骨头里面像钢筋一样，有许多硬硬的钙和柔韧的胶原，所以既坚固又不容易折断。它们还一直在悄悄更新，让自己保持强壮。
Bones are built like reinforced beams, with hard calcium and springy collagen, making them tough yet hard to break. They also renew themselves quietly to stay strong.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
王庭槐 主编,《生理学》第9版,人民卫生出版社,2018
Wang Tinghuai ed., Physiology, 9th ed., People's Medical Publishing House, 2018
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787117266598（豆瓣书目条目: 生理学）
#骨头 #钙
为什么喝牛奶能让骨头更结实？
Why does drinking milk help make bones stronger?
牛奶等食物里的钙是建造骨头的原材料，身体把它们放进骨骼里，让骨头又硬又密。小朋友长身体时补钙最多，所以从小喝牛奶对骨骼很有帮助。
Calcium from milk and other foods is the raw material the body uses to build bone, packing it dense and hard. Children need the most calcium while growing, so drinking milk early helps bones a lot.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Harrison's Principles of Internal Medicine 第20版,McGraw-Hill,2018
J. Loscalzo et al., Harrison's Principles of Internal Medicine, 20th ed., McGraw-Hill, 2018
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY ISBN 标识 9781259644047（按标识回读: Harrison's prin
#钙 #骨头
为什么大人有206块骨头？
Why do grown-ups have 206 bones?
骨头拼起来就是我们的骨架，像房子的柱子一样撑起身体、保护大脑和心脏。小宝宝骨头更多，长大后有些会合在一起，最后变成206块。
Bones form the skeleton, like the frame of a house, holding the body up and protecting the brain and heart. Babies are born with more bones, and some join together as they grow, ending with 206.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Harrison's Principles of Internal Medicine 第20版,McGraw-Hill,2018
J. Loscalzo et al., Harrison's Principles of Internal Medicine, 20th ed., McGraw-Hill, 2018
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY ISBN 标识 9781259644047（按标识回读: Harrison's prin
#骨骼 #身体
为什么骨折的骨头能长好？
Why can a broken bone grow back together?
骨头里住着造骨细胞，骨折后它们会立刻在断口处搭起新的骨桥，把裂开的地方慢慢接上。只要好好固定休息，几周就能长牢。
Bones contain bone-building cells that rush to a break and build a new bony bridge across the gap. With proper rest and support, the crack can knit back together in a few weeks.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Harrison's Principles of Internal Medicine 第20版,McGraw-Hill,2018
J. Loscalzo et al., Harrison's Principles of Internal Medicine, 20th ed., McGraw-Hill, 2018
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY ISBN 标识 9781259644047（按标识回读: Harrison's prin
#骨折 #愈合