Medical Question # 1

As you know, the pulse is the frequency with which the heart is compressed.
Attention is the question: why do they measure the pulse not on the heart (which is quite possible - try it yourself), but on the carotid artery or on the wrist?
In Wikipedia, on request pulse answer can not be found. Please do not use search engines.
I warn you right away: there may be a lot of answers.

Go! And waved his hand.