arteriolae rectae

例句：

1. 1. The arteries carry oxygenated blood to the heart.
   动脉将富含氧气的血液输送到心脏。
2. 2. Blood vessels are responsible for transporting nutrients throughout the body.
   血管负责在整个身体中运输营养物质。
3. 3.The arteries are narrower than the veins, allowing less blood to flow through them.
   动脉比静脉更窄，允许较少的血液流过它们。