digestive Medicine & Health

6 个科学问题 · 医学健康 Medicine & Health

本页目录

胃酸为什么不会消化胃本身?

Why doesn't stomach acid digest the stomach itself?

胃壁会分泌一层厚厚的黏液屏障,并不断生成新细胞,加上前列腺素保护,使强酸不会消化胃自己;若这层保护受损就会得胃溃疡。
The stomach lining secretes a thick mucus barrier and constantly renews cells, with prostaglandins protecting it, so acid doesn't digest the organ; if protection fails, ulcers form.
难度 专业 · 适合 高中(15-18) CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source

葛均波 等主编,《内科学》第9版,人民卫生出版社,2018

Ge Junbo et al. eds., Internal Medicine, 9th ed., PMPH, 2018

#胃酸 #溃疡

肠道细菌对人体有什么作用?

What role do gut bacteria play in the body?

肠道里住着大量细菌(肠道菌群),它们帮我们分解某些食物、合成维生素(如维生素K)、训练免疫系统并抵御有害菌。
The gut hosts huge numbers of bacteria that help break down food, make vitamins like K, train the immune system, and block harmful germs.
难度 进阶 · 适合 初中(12-15) CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source

葛均波 等主编,《内科学》第9版,人民卫生出版社,2018

Ge Junbo et al. eds., Internal Medicine, 9th ed., PMPH, 2018

#肠道菌群 #微生物

为什么会打嗝?

Why do we hiccup?

打嗝是膈肌突然不自主收缩,使空气被快速吸入并发出"嗝"声,常因吃太快、喝碳酸饮料或受凉引起,大多会自己停。
Hiccups are sudden involuntary contractions of the diaphragm that pull in air with a "hic" sound, often from eating fast, fizzy drinks, or cold, and usually stop on their own.
难度 进阶 · 适合 小学高段(9-12) CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source

葛均波 等主编,《内科学》第9版,人民卫生出版社,2018

Ge Junbo et al. eds., Internal Medicine, 9th ed., PMPH, 2018

#打嗝 #膈肌

胃是怎样消化食物的?

How does the stomach digest food?

胃会分泌胃酸和消化酶,把食物变成半流质的食糜,再送到小肠继续消化和吸收。
The stomach secretes acid and enzymes that turn food into a semi-liquid called chyme, which then moves to the small intestine for further digestion and absorption.
难度 入门 · 适合 大众 CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source

葛均波 等主编,《内科学》第9版,人民卫生出版社,2018

Ge Junbo et al. eds., Internal Medicine, 9th ed., PMPH, 2018

#胃 #消化

为什么要喝水?

Why do we need to drink water?

水帮助运送营养、排出废物,还能调节体温;身体缺水会口渴、没精神。
Water helps carry nutrients, remove waste, and control body temperature; without enough, you feel thirsty and sluggish.
难度 入门 · 适合 小学低段(6-8) CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source

葛均波 等主编,《内科学》第9版,人民卫生出版社,2018

Ge Junbo et al. eds., Internal Medicine, 9th ed., PMPH, 2018

#水 #体液

为什么要咀嚼食物?

Why do we need to chew food?

咀嚼能把食物磨碎、和口水混合,让食物更好吞下,也更方便胃和肠去消化。
Chewing grinds food and mixes it with saliva so it is easier to swallow and easier for the stomach and intestines to digest.
难度 入门 · 适合 小学低段(6-8) CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source

葛均波 等主编,《内科学》第9版,人民卫生出版社,2018

Ge Junbo et al. eds., Internal Medicine, 9th ed., PMPH, 2018

#咀嚼 #消化