人体淋巴系统由哪些主要结构组成，其功能是什么？
What are the main structures of the human lymphatic system and what do they do?
淋巴系统包括淋巴管、淋巴结、脾、胸腺和扁桃体等。它负责回收组织液、运输脂肪，并参与免疫防御以过滤病原体。
The lymphatic system includes lymphatic vessels, lymph nodes, the spleen, thymus, and tonsils. It returns tissue fluid to circulation, transports fats, and supports immune defense by filtering pathogens.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
万学红 陈红 主编,《诊断学》第9版,人民卫生出版社,2018
Wan Xuehong and Chen Hong eds., Diagnostics, 9th ed., PMPH, 2018
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787117263740（豆瓣书目条目: 诊断学）
#淋巴系统 #免疫 #解剖
人体肌肉主要分为哪几类？
What are the main types of muscle tissue in the human body?
人体肌肉分为骨骼肌、心肌和平滑肌三类。骨骼肌受意识控制用于运动，心肌构成心脏，平滑肌分布于内脏血管壁。
Human muscle tissue is divided into skeletal, cardiac, and smooth muscle. Skeletal muscle is under voluntary control for movement, cardiac muscle forms the heart, and smooth muscle lines internal organs and blood vessels.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
万学红 陈红 主编,《诊断学》第9版,人民卫生出版社,2018
Wan Xuehong and Chen Hong eds., Diagnostics, 9th ed., PMPH, 2018
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787117263740（豆瓣书目条目: 诊断学）
#肌肉 #组织 #解剖
肝脏在人体中承担哪些重要功能？
What important functions does the liver perform in the body?
肝脏是身体最大的内脏器官，负责解毒、代谢营养、储存糖原和制造胆汁。它还能合成多种参与凝血和免疫的蛋白质。
The liver is the largest internal organ and is responsible for detoxification, nutrient metabolism, glycogen storage, and bile production. It also makes many proteins involved in blood clotting and immunity.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
万学红 陈红 主编,《诊断学》第9版,人民卫生出版社,2018
Wan Xuehong and Chen Hong eds., Diagnostics, 9th ed., PMPH, 2018
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787117263740（豆瓣书目条目: 诊断学）
#肝脏 #代谢 #解剖
眼睛是如何让我们看见物体的？
How do our eyes let us see objects?
光线穿过角膜和晶状体后聚焦在视网膜上，视网膜上的感光细胞把光信号转换成神经信号。这些信号经视神经传送到大脑，我们才“看见”了物体。
Light passes through the cornea and lens and is focused onto the retina, where light-sensitive cells convert it into nerve signals. These signals travel through the optic nerve to the brain, which is how we 'see' objects.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
万学红 陈红 主编,《诊断学》第9版,人民卫生出版社,2018
Wan Xuehong and Chen Hong eds., Diagnostics, 9th ed., PMPH, 2018
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787117263740（豆瓣书目条目: 诊断学）
#眼睛 #视觉 #解剖
脊髓有什么作用？
What is the function of the spinal cord?
脊髓是连接大脑和身体其他部分的主要通道，负责传递感觉和运动信号。它还是许多简单反射（如膝跳反射）的中枢。
The spinal cord is the main pathway connecting the brain to the rest of the body, carrying sensory and motor signals. It also serves as the center for many simple reflexes such as the knee-jerk reflex.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
万学红 陈红 主编,《诊断学》第9版,人民卫生出版社,2018
Wan Xuehong and Chen Hong eds., Diagnostics, 9th ed., PMPH, 2018
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787117263740（豆瓣书目条目: 诊断学）
#脊髓 #神经 #解剖
心脏大致位于身体的哪一侧？
Which side of the chest is the heart located on?
心脏位于胸腔中部偏左，大约在两个肺之间、略靠左侧的位置。它的大小通常相当于自己的拳头。
The heart sits in the middle of the chest, slightly to the left, between the two lungs. It is roughly the size of a person's own fist.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
万学红 陈红 主编,《诊断学》第9版,人民卫生出版社,2018
Wan Xuehong and Chen Hong eds., Diagnostics, 9th ed., PMPH, 2018
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787117263740（豆瓣书目条目: 诊断学）
#心脏 #胸腔 #解剖
成年人的人体骨骼大约有多少块骨头？
How many bones are there in the adult human body?
成年人的人体骨骼通常由206块骨头组成。婴儿出生时骨头更多，部分骨头会随成长逐渐融合。
The adult human skeleton is normally made up of 206 bones. Babies are born with more bones, some of which gradually fuse together as they grow.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
万学红 陈红 主编,《诊断学》第9版,人民卫生出版社,2018
Wan Xuehong and Chen Hong eds., Diagnostics, 9th ed., PMPH, 2018
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787117263740（豆瓣书目条目: 诊断学）
#骨骼 #骨头 #解剖
人类一共有几种类型的牙齿？
How many types of teeth do humans have?
人类的牙齿主要分为切牙、尖牙、前磨牙和磨牙四类。它们分别负责切断、撕裂和磨碎食物。
Human teeth are mainly divided into incisors, canines, premolars, and molars. They are used to cut, tear, and grind food respectively.
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
万学红 陈红 主编,《诊断学》第9版,人民卫生出版社,2018
Wan Xuehong and Chen Hong eds., Diagnostics, 9th ed., PMPH, 2018
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787117263740（豆瓣书目条目: 诊断学）
#牙齿 #口腔 #解剖
肺的主要作用是什么？
What is the main job of the lungs?
肺的主要作用是在我们呼吸时交换气体。它们把空气中的氧气送入血液，并把体内的二氧化碳排出去。
The main job of the lungs is to exchange gases when we breathe. They bring oxygen from the air into the blood and remove carbon dioxide from the body.
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
万学红 陈红 主编,《诊断学》第9版,人民卫生出版社,2018
Wan Xuehong and Chen Hong eds., Diagnostics, 9th ed., PMPH, 2018
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787117263740（豆瓣书目条目: 诊断学）
#肺 #呼吸 #解剖