22 Questions
Which vessels carry blood towards the heart?
Arteries
What is the function of arterioles?
To control blood flow into capillaries
Which type of tissue forms the inner layer (Tunica Interna) of a blood vessel?
Simple squamous endothelium tissue
What is the thickest layer in the wall of a blood vessel?
Tunica Media
What is the main function of veins in the cardiovascular system?
To carry blood away from the heart
Which vessels connect capillaries to veins?
Venules
What is the function of capillaries in the circulatory system?
To allow exchange of gases and nutrients
Which component of the Tunica Media is responsible for the elasticity of blood vessels?
Smooth muscle
What is the main function of arterioles in the circulatory system?
To control blood flow into capillaries
What tissues form the inner layer (Tunica Interna) of a blood vessel?
Simple squamous endothelium tissue
What is the role of smooth muscle cells in blood vessels?
To regulate the diameter of the lumen
What happens when smooth muscle in the blood vessel contracts?
Vasoconstriction occurs
What is the function of the elastic fibers within the tunica media of blood vessels?
To allow for expansion under pressure
What is the main role of arteries in the circulatory system?
To carry oxygenated blood away from the heart to other organs
What is a characteristic of all arteries?
They carry deoxygenated blood (except pulmonary arteries)
What is found in the thickest layer of artery walls?
Smooth muscle cells and elastic tissue
In what situation would smooth muscle in a small artery or arteriole contract?
In response to increased sympathetic stimulation
What is the function of the tunica interna in artery walls?
To allow for expansion under pressure
What happens when elastic arteries stretch and recoil under pressure?
Vasodilation occurs
What is a distinguishing feature of arteries compared to veins?
Thin walls that can expand under pressure
What causes vasoconstriction in blood vessels?
Increase in sympathetic stimulation
What type of blood do all arteries carry?
Oxygenated blood
Test your knowledge of the basic anatomy of blood vessels and circulatory routes in the cardiovascular system. This quiz covers the functions of arteries, veins, venules, and capillaries in the circulation of blood, including the transportation of oxygen and carbon dioxide.
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