肝脏在代谢和解毒中承担哪些工作？
What metabolic and detox roles does the liver play?
肝脏把葡萄糖转为糖原储存、分解毒素与药物、合成血浆蛋白和胆汁，并通过尿素循环处理氨，是全身代谢的中枢工厂。
The liver stores glucose as glycogen, breaks down toxins and drugs, makes plasma proteins and bile, and processes ammonia via the urea cycle—a central metabolic factory.
难度 专业 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#肝脏 #代谢 #解毒
小肠为什么是吸收营养的主要场所？
Why is the small intestine the main site for nutrient absorption?
小肠内壁有密布的绒毛和微绒毛，极大增加表面积，并富含血液和淋巴管，能高效地吸收糖、氨基酸、脂肪等营养物质。
The small intestine's wall is covered with villi and microvilli, vastly increasing surface area and richly supplied with blood and lymph, efficiently absorbing sugars, amino acids, and fats.
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
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#小肠 #绒毛 #吸收
胃是如何帮助消化食物的？
How does the stomach help digest food?
胃分泌胃酸和蛋白酶，酸性环境既杀灭部分细菌又激活酶，把食物搅成半流质的食糜，再送入小肠继续消化。
The stomach secretes acid and protease; the acidic environment kills some bacteria and activates enzymes, churning food into semi-liquid chyme before passing it to the small intestine.
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
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#胃 #胃酸 #消化