CFA - Blood Vessels

How are blood vessels different from rigid pipes?

• They are immovable structures

• They do not exhibit pulsation

• They lack the ability to constrict or dilate

• They are dynamic structures capable of pulsation, constriction, and relaxation

Identify the three primary types of blood vessels.

• Arteries, venules, and capillaries

• Arteries, capillaries, and lymphatic vessels

• Arteries, capillaries, and veins

• Veins, arterioles, and capillaries

What role do arterioles play in the circulatory system?

• To remove blood from capillaries

• To connect with venules

• To push blood into major arteries

• To supply the capillary networks of various organs and tissues

From which vessels does blood exit the capillaries?

• Arterioles

• Venules

• Lymphatic vessels

• Large arteries

What is the total length of blood vessels in an average adult human?

• 10,000 km

• 50,000 miles

• 100,000 km

• 200,000 miles

In which direction does blood primarily flow in arteries?

• Away from the heart

• Toward the heart

• Both away from and toward the heart

• Parallel to the heart

In what way do veins differ from arteries regarding the direction of blood flow?

• Veins transport blood away from the heart

• Veins transport blood towards the heart

• Veins transport oxygen-rich blood

• Veins divide into smaller vessels

What is the usual composition of blood in arteries and veins during systemic circulation?

• Arteries transport oxygen-rich blood, while veins transport blood with less oxygen.

• Arteries transport blood lacking oxygen, while veins transport oxygen-rich blood.

• Arteries transport deoxygenated blood, while veins transport oxygen-rich blood.

• Arteries transport blood high in oxygen, while veins transport deoxygenated blood.

What are the three distinct layers called that encase the central space filled with blood in blood vessels?

• Tunics

• Vein linings

• Vascular layers

• Endothelial walls

Which layer of a blood vessel is directly in contact with the blood flowing within it?

• Tunica externa

• Tunica media

• Tunica intima

• Endothelium