A Person Has Had an Accident and Is Bleeding Freely

question 40

Multiple Choice

A person has had an accident and is bleeding freely.Paramedics have arrived to stop the bleeding and are rushing the person to the hospital where a transfusion awaits.How is the body mobilizing extra blood from the blood reservoir to partially compensate until then?

• A)Veins are undergoing massive vasodilatation to move blood back to the heart.
• B)Veins are undergoing massive vasoconstriction to move blood back to the heart.
• C)Arteries are undergoing massive vasoconstriction to move blood back to the heart.
• D)Arteries are undergoing massive vasodilatation to move blood back to the heart.