呼吸的原理

一张健康信息图,以正面躯干为中心展示人体呼吸系统,呈现鼻腔、气管、支气管与细致的肺,并配一个肺泡放大插图,用彩色箭头示意气体交换(氧气进,二氧化碳出)。编号标签沿两侧排列。柔和的扁平医学插画,珊瑚粉色的肺置于平静的薄荷绿背景上,细青色引线。顶部圆角标题「呼吸的原理」,画面底部中央一个小小的膈肌运动示意图。

A health infographic of the human respiratory system centered on a front-facing torso showing the nasal passage, trachea, bronchi and detailed lungs, with a zoomed inset of an alveolus and gas exchange (O2 in, CO2 out) using colored arrows. Numbered labels run along both sides. Soft flat medical illustration, coral-pink lungs on a calm mint background, thin teal leader lines. A rounded title 'How You Breathe' at the top, a small diaphragm-motion diagram bottom-center.