What are the smallest blood vessels in the body called?

What type of blood vessel carries blood away from the heart?

Which blood vessels are responsible for bringing blood back to the heart?

Which type of blood vessel is characterized by thicker walls and higher pressure due to the blood being pumped from the heart?

Which blood vessel type is involved in nutrient and gas exchange between blood and body cells?

Which of the following best describes the aorta?

Which type of blood vessels are only one cell thick?