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Questions and Answers
Which type of blood vessel carries blood away from the heart?
Which type of blood vessel carries blood away from the heart?
- Arteries (correct)
- Capillaries
- Veins
- Tunica interna
What is the central blood-containing space surrounded by tunics called?
What is the central blood-containing space surrounded by tunics called?
- Tunica externa
- Lumen (correct)
- Endothelium
- Basal lamina
Which type of blood vessel contacts tissue cells and directly serves cellular needs?
Which type of blood vessel contacts tissue cells and directly serves cellular needs?
- Tunica media
- Veins
- Capillaries (correct)
- Arteries
What are the three major types of blood vessels?
What are the three major types of blood vessels?
What are the components of arteries and veins?
What are the components of arteries and veins?
Which layer of the blood vessels regulates vasoconstriction and vasodilation?
Which layer of the blood vessels regulates vasoconstriction and vasodilation?
In which type of blood vessels are continuous, fenestrated, and sinusoidal capillaries found?
In which type of blood vessels are continuous, fenestrated, and sinusoidal capillaries found?
Where are the largest blood pressure fluctuations smoothed out?
Where are the largest blood pressure fluctuations smoothed out?
Which type of capillary has a thin tunica interna and allows only a single red blood cell to pass at a time?
Which type of capillary has a thin tunica interna and allows only a single red blood cell to pass at a time?
What is the cuff of smooth muscle that surrounds each true capillary and regulates blood flow into the capillary called?
What is the cuff of smooth muscle that surrounds each true capillary and regulates blood flow into the capillary called?
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Study Notes
Blood Vessels
- Arteries carry blood away from the heart.
- The central blood-containing space surrounded by tunics is called the lumen.
- Capillaries contact tissue cells and directly serve cellular needs.
Types of Blood Vessels
- The three major types of blood vessels are arteries, veins, and capillaries.
- Arteries and veins have three main components: tunica interna, tunica media, and tunica externa.
Regulation of Blood Vessels
- The tunica media layer regulates vasoconstriction and vasodilation.
Capillaries
- Continuous, fenestrated, and sinusoidal capillaries are found in specific types of blood vessels.
- The largest blood pressure fluctuations are smoothed out in arterioles.
Capillary Structure
- Fenestrated capillaries have a thin tunica interna and allow only a single red blood cell to pass at a time.
- The cuff of smooth muscle that surrounds each true capillary and regulates blood flow into the capillary is called a precapillary sphincter.
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