Question

Which of these is not a part of the circulatory system?
heart
blood
arteries
femur

Answer 1

Femur is not apart of the circulatory system.

Answer 2

The Femur Is Not Part Of The Circulatory System Because The Femur Is A Bone. It Has Nothing To Do With Blood, Air, Or Circulitation. On The Other Hand, The Heart, Blood, And Arteries Are Some Of The Main Parts, Or The Circulatory System.