A tubular structure that carries blood through the body; includes arteries and veins, used in anatomical contexts.
血管が詰まると心臓発作の危険がある。
If a blood vessel becomes blocked, there is a risk of a heart attack.
注射するときは血管を探して針を刺す。
When giving an injection, you look for a blood vessel before inserting the needle.
動脈と静脈は血管の代表的な種類だ。
Arteries and veins are typical types of blood vessels.