KA 2.5 Arteries, veins and capillaries

Choose two structures in the arteries and veins that contain elastic fibres

• lumen

• endothelium

• muscular layer

• outer connective layer

How does blood pressure in blood vessels change as it moves away from the heart?

• Increases

• decreases

• stays the same

Which description of vasodilation is correct?

• The lumen contracts

• The lumen relaxes

• Smooth muscle around the arteries contracts

• Smooth muscles around the arteries relaxes

Choose all the blood vessels that allow an exchange of substances with tissue cells.

• Arteries

• Veins

• Capillaries

Which of the following structures is NOT true for veins?

• Veins have a thinner outer connective layer

• Veins contain valves

• Veins have a wide lumen

• Veins have a thinner muscular layer

Complete the sentence correctly: Pressure filtration allows ______________ to pass through capillary walls into the _____________.

• tissue fluid, plasma

• plasma, tissue fluid

• glucose, plasma

• glucose, tissue fluid

Choose two wastes that are excreted from cells into tissue fluid.

• glucose

• carbon dioxide

• urea

• oxygen

Choose all the substances that would NOT be filtered out of a capillary by pressure filtration.

• oxygen

• plasma proteins

• water

• red blood cells

Which component of blood vessels allows them to stretch and recoil?

• Muscle tissue

• Outer connective layer

• Elastic fibres

• Lumen

What is the name of the substance that passes into the lymph vessel?

(a)