Arteries have thicker walls than veins, which have thicker walls than capillaries

Capillaries contain oxygenated blood only

Pressure in veins is always higher than it is in arteries

Arteries contain valves to prevent backflow of blood

Peripheral vasodilation

Peripheral vasoconstriction

Hyperventilation

Shivering

None of these

Peripheral vasodilation

Peripheral vasoconstriction

Hyperventilation

Shivering

None of these

Arteries have thicker walls than veins, which have thicker walls than capillaries

Capillaries contain oxygenated blood only

Pressure in veins is always higher than it is in arteries

Arteries contain valves to prevent backflow of blood

Arteries have thicker walls than veins, which have thicker walls than capillaries

Capillaries contain oxygenated blood only

Pressure in veins is always higher than it is in arteries

Arteries contain valves to prevent backflow of blood

Pulmonary arteries

Aorta

Pulmonary veins

Vena cavae

Pulmonary arteries

Aorta

Pulmonary veins

Vena cavae

Pulmonary arteries

Aorta

Pulmonary veins

Vena cavae

Arterioles are able to regulate blood pressure more efficiently than large arteries.

Smaller arteries have more muscle tone, and are able to tolerate more pressure than large arteries.

The smooth muscle is responsible for keeping the arterioles constricted at all times.

Capillaries will have an even larger amount of smooth muscle per volume, because they are even smaller than arterioles.

Pulmonary veins

Pulmonary arteries

Aorta

Coronary artery

Vena cava