endoplasmic reticulum
consist of the blood,the heart,and an intricate network of long,slender tubes called blood vessels that originate from the heart.
I am pretty sure that the network of tubes is called Endoplasmic Reticulum.
The Haversian canals
Bronchioles.
Tracheal tubes
Blood vessels
cytoskeleton
Endoplasmic Reticulum
The tubes are called as fallopian tubes.
They are called Fallopian tubes
A group of test tubes are called samples.
It is network of tubes in eukaryotic cells .