20.1b Elastic (Conducting) Arteries

What are elastic (conducting) arteries?

The largest arteries that conduct blood from the heart to muscular arteries.

What is the diameter range of elastic arteries?

Approximately 2.5 cm to 1 cm.

What is the main function of elastic arteries?

To conduct blood from the heart to muscular arteries.

Why are elastic arteries called conducting arteries?

Because they carry blood directly away from the heart to other arteries.

What type of fibers are abundant in elastic arteries?

Elastic fibers.

What is the function of elastic fibers in elastic arteries?

They allow the vessel to stretch and recoil.

Why is stretch and recoil important in elastic arteries?

It helps maintain continuous blood flow.

What happens to elastic arteries during systole?

They stretch as blood is pumped into them.

What happens to elastic arteries during diastole?

They recoil and help push blood forward.

How do elastic arteries help during diastole?

Their recoil helps propel blood through the arteries when the heart is relaxing.

Which arteries are examples of elastic arteries?

Aorta, pulmonary trunk, common carotid arteries, and common iliac arteries.

Which is the largest elastic artery?

The aorta.

Where are elastic arteries located in relation to the heart?

They are closest to the heart.

How do elastic arteries contribute to blood pressure regulation?

They dampen pressure fluctuations by stretching and recoiling.

Why are elastic arteries important for continuous blood flow?

They prevent blood flow from stopping between heartbeats.

What type of blood flow do elastic arteries help maintain?

Smooth, continuous flow rather than pulsatile flow.