In a relationship, there are benefits or rewards for both partners. They each gain something from eachother by being together,
The tissue responsible for vasoconstriction of blood vessels is the <span>tunica externa</span>
•Principles of first aid•
•Call for help
•Calmly take charge
•Check the scene and the casualty
•Carefully apply FIRST AID.
Hope this helps! Have a great day and good luck! ;)