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Quiz about Bloody Vessels
Quiz about Bloody Vessels

Bloody Vessels Trivia Quiz


This is about the different blood vessels in the circulatory system.

A multiple-choice quiz by jamesf. Estimated time: 5 mins.
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Author
jamesf
Time
5 mins
Type
Multiple Choice
Quiz #
269,439
Updated
Dec 03 21
# Qns
10
Difficulty
Tough
Avg Score
6 / 10
Plays
5818
Awards
Top 10% Quiz
Last 3 plays: Guest 174 (6/10), Guest 192 (3/10), Joepetz (10/10).
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Question 1 of 10
1. What is the difference between an artery and a vein? Hint


Question 2 of 10
2. In which of these blood vessels is the average speed of blood flow the slowest? Hint


Question 3 of 10
3. How does the volume of blood per hour flowing up the blood vessels in your leg compare to the volume of blood per hour flowing down the blood vessels in your leg? Hint


Question 4 of 10
4. In which of these blood vessels does the blood pressure reach the highest measurement? Hint


Question 5 of 10
5. The main veins contain valves to stop blood flowing backwards. How do these valves work? Hint


Question 6 of 10
6. What is the name of the innermost layer of an artery wall? Hint


Question 7 of 10
7. What is coronary heart disease aka coronary artery disease? Hint


Question 8 of 10
8. Where are the vasa vasorum? Hint


Question 9 of 10
9. In adults, what is the function of the vessel called the ductus arteriosus or ductus arteriosum? Hint


Question 10 of 10
10. What is arteriosclerosis? Hint



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Most Recent Scores
Mar 27 2024 : Guest 174: 6/10
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quiz
Quiz Answer Key and Fun Facts
1. What is the difference between an artery and a vein?

Answer: Arteries carry blood away from the heart, veins towards the heart.

Most, but not all, arteries carry oxygenated blood: the pulmonary artery carries deoxygenated blood (to the lungs) and the pulmonary vein carries oxygenated blood, and the vessels of the umbilical cord are another exception.
2. In which of these blood vessels is the average speed of blood flow the slowest?

Answer: capillaries

Capillaries are very small, but there are millions of them. Therefore, because the total cross-sectional area of all the capillaries is so large, the blood flow through them is correspondingly slow.
3. How does the volume of blood per hour flowing up the blood vessels in your leg compare to the volume of blood per hour flowing down the blood vessels in your leg?

Answer: Less blood flows up your leg.

The capillaries are quite leaky, so some blood plasma is lost through the capillary walls into the tissue fluid. Much of this leaked fluid returns later to the circulation via the lymph system, which is a kind of drainage system - so, some of the blood that goes down your leg comes back as lymph, not as blood.
4. In which of these blood vessels does the blood pressure reach the highest measurement?

Answer: aorta

Blood flows from high pressure (in the arteries) to low pressure (in the veins). A higher pressure is generated in the aorta than in the pulmonary circulation, because the blood has to be forced through more capillary beds.
5. The main veins contain valves to stop blood flowing backwards. How do these valves work?

Answer: They are pushed open or closed by the blood pressure.

The valves are pocket-shaped flaps of tissue, which are pushed open or closed according to whether the blood pressure is higher on one side of the valve or on the other.
6. What is the name of the innermost layer of an artery wall?

Answer: tunica intima

The tunica intima, also sometimes called the tunica interna, is a layer of flattened surface (endothelial) cells lining the lumen (or tube) of the artery. Outside this, there is the tunica media (mainly muscle and elastic tissue) and the tunica adventitia (connective tissue). The lumen is not part of the artery wall.
7. What is coronary heart disease aka coronary artery disease?

Answer: where the arteries supplying blood to the heart become narrowed or blocked

The coronary artery supplies oxygenated blood to the heart muscle itself. In coronary heart disease, this vessel becomes partly or completely blocked, cutting off the oxygen supply.
8. Where are the vasa vasorum?

Answer: in the walls of the arteries

The larger arteries need their own blood supply - to carry oxygen etc to the cells that make up the artery wall. These "vessels within vessels" are the vasa vasorum.
9. In adults, what is the function of the vessel called the ductus arteriosus or ductus arteriosum?

Answer: It has no function.

In the foetus (where the lungs cannot be used for breathing), the ductus arteriosus diverts blood away from the pulmonary artery (and the lungs) to the aorta. After birth, this vessel closes up, but it remains as a vestigial structure, known as the ductus arteriosum, linking the pulmonary artery and the aorta.
10. What is arteriosclerosis?

Answer: loss of elasticity of the artery walls

In arteriosclerosis, or "hardening of the arteries", the artery walls lose their elasticity due to deposition of collagen fibres: this is an ageing process. The deposition of fatty plaques (which may be due to high blood cholesterol) is known as atherosclerosis.
Source: Author jamesf

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