What would decrease peripheral resistance to blood flow?

Blood flow reduces when its flow resistance is expanded. Total peripheral resistance is characterized as total blood flow resistance in the systemic circulation. Because of their smaller size and muscle walls the arterioles are effective regulators of blood flow.

Peripheral resistance is the artery's resistance to blood flow. As the arteries restrict the resistance increases and the resistance decreases when they dilate. Three factors influencing peripheral resistance are :

depends where

on my head

yes

on my legs

yes

on my

arms

yesh