Veins and Arteries Flashcards
What are the three main types of blood vessels in the circulatory system?
Arteries, veins, and capillaries.
True or False: Arteries carry blood away from the heart.
True.
Fill in the blank: The primary function of veins is to carry blood ______ the heart.
to
What is the smallest type of blood vessel?
Capillaries.
Which blood vessels have the thickest walls?
Arteries.
Multiple Choice: Which type of blood vessel is primarily responsible for nutrient and gas exchange?
Capillaries.
What is the main component that helps veins return blood to the heart against gravity?
Valves.
True or False: Capillaries are only one cell thick.
True.
What type of blood do pulmonary veins carry?
Oxygenated blood.
Fill in the blank: The pressure in arteries is generally ______ than in veins.
higher
What is the role of the aorta in the circulatory system?
It carries oxygenated blood from the heart to the body.
Multiple Choice: Which type of blood vessel typically has a larger lumen?
Veins.
True or False: All veins carry deoxygenated blood.
False.
What is the name of the largest vein in the body?
Vena cava.
Fill in the blank: ______ are responsible for regulating blood flow through capillaries.
Precapillary sphincters
What is the main function of arteries?
To carry blood away from the heart.
True or False: Veins have a thicker muscle layer than arteries.
False.
What is the significance of the valves in veins?
They prevent backflow of blood.
Which type of blood vessel is involved in the exchange of oxygen and carbon dioxide?
Capillaries.
Multiple Choice: Which type of blood vessel has the highest blood pressure?
Arteries.
What do we call the condition where blood flow is obstructed in the veins?
Venous insufficiency.
Fill in the blank: The ______ circulation refers to the flow of blood between the heart and the lungs.
pulmonary
What is the primary structural difference between arteries and veins?
Arteries have thicker walls and more smooth muscle.
True or False: Capillaries connect arterioles and venules.
True.
What is the role of the pulmonary arteries?
To carry deoxygenated blood from the heart to the lungs.
Fill in the blank: Blood pressure is measured in ______.
millimeters of mercury (mmHg)
