When the arteries reach cells, they divide into smaller blood vessels called:
Artery gets divided into smaller vessels and the smallest vessels have walls which are one-cell thick. These smallest vessels are called __.
When matter is divided into smaller and smaller particles, ultimately a stage is reached when the particles cannot divide further into smaller particles. These tiny particles are called ___.
Blood vessels that connect arteries to veins are called:
According to democritus "When matter is divided into smaller and smaller particles, ultimately a stage is reached when the particles cannot divide further into smaller particles. These tiny particles are called ___ .