What is NOT one of the functional distinctions between arteries and veins?
A)Veins always carry deoxygenated blood.
B)Veins usually have a thinner vessel wall.
C)Veins are easily stretched.
D)Veins often contain one-way valves.

Question

Quizplus · Accepted Answer

While it is true that veins often carry deoxygenated blood, it is not a functional distinction between arteries and veins. Both capillaries and veins can carry deoxygenated blood, depending on their location and function.

Answer: B
 While there are some exceptions, veins usually have a thinner vessel wall than arteries. This allows them to easily expand and contract as blood flows through them.

Answer: C
 While veins do have some elasticity, they are not easily stretched. This is because they do not have the same thick layers of smooth muscle and elastic tissue as arteries.

Answer: D
 One-way valves are a key functional distinction between veins and arteries. These valves help to prevent blood from flowing backwards and ensure that blood is transported efficiently back to the heart.

What Is NOT One of the Functional Distinctions Between Arteries