5 Questions
Which layer of the vessel is composed of concentric layers of smooth muscle cells?
Tunica media
What is the main function of the endothelial cells in the vessel lining?
To form a barrier that contains blood within the lumen of the vessel
Which layer of the vessel contains strong connective tissue?
Tunica externa
Which type of vessel has uniquely thin walls composed of only endothelial cells and basement membrane?
Capillaries
What substances do endothelial cells secrete that modulate the contraction of smooth muscle cells in the vessel?
Vasodilators and vasoconstrictors
Test your knowledge of the layers of blood vessels and their unique characteristics in this quiz. Explore the tunica intima, tunica media, tunica externa, and capillaries to learn about their composition and function.
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