一氧化氮在心血管系统中起着重要的作用，因为它介导血管内皮舒张，这可以缓解血液流经心脏和循环系统的压力。

Nitric oxide is crucial to the cardiovascular system because it signals the inner walls of blood vessels to relax, which facilitates the flow of blood through the heart and circulatory system.

youdao

本文从运动对心血管系统形态及功能影响的角度，介绍了运动形式、类型、强度及一些相关因素对心脏、血管及心脏内分泌系统的影响。

The paper mainly introduces the effect of exercise different of methods, types, intensity and other factors on heart, vessels and the heart endocrine function.

youdao

The cardiovascular system, which is the heart and the blood vessels which are responsible for and the blood and so this is responsible for moving blood around the body and the blood brings oxygen and nutrients to every part of the body, you know that.

心血管系统,包括心脏和血管,主要负责输送血液,即心血管系统负责将血液送至全身,血液会带着氧气和营养物质,到身体的每一个部分,你懂的

耶鲁公开课 - 生物医学工程探索课程节选