Are all the blood vessels right ? How many of them are rigid?

How many words can be made using all the letters in the word MONDAY ? How many of them being with M and do not end with Y?

Name the blood vessels that carry blood to the veins,

________ are the blood vessels that carry blood away from the heart.

How many different arrangements can be made by using all the letters in the word MATHEMATICS.How many of them begin with C? How many of them begin with T?

How many different arrangements can be made by using all the letters in the word MATHEMATICS. How many of them begin with C? How many of them begin with T?

Name the blood vessels that supply blood in the walls of heart?

A blood vessel which carries blood back to the heart is :

The blood vessel that gathers blood in earthworm