High college Biology aid » Tissues, Organs, and Organ systems » Organs and also Organ systems » Circulatory system » understanding Circulatory vessels
Explanation:

Arteries are responsible for delivering blood come organs, traveling away from the heart, if veins space responsible for transferring blood back toward the heart. Arteries generally bring oxygenated blood to supply oxygen come organs, and also veins generally bring deoxygenated blood earlier to the heart because that re-oxygenation. The singular exceptions room the pulmonary arteries and also pulmonary veins. The pulmonary arteries still take trip away native the heart, however carry deoxygenated blood from the appropriate atrium to the lungs. The pulmonary veins still travel toward the heart, yet carry oxygenated blood indigenous the lungs to the left atrium.

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Example concern #2 : understanding Circulatory vessels


Which of the following statements around the circulatory mechanism is false?


Possible Answers:

The best ventricle pumps blood come the lungs


Veins always bring deoxygenated blood earlier to the heart


The inferior vena cava empties blood right into the best atrium


Blood will always travel indigenous arteries to capillaries, and also then right into veins


Correct answer:

Veins constantly bring deoxygenated blood back to the heart


Explanation:

A common misconception is the veins constantly carry deoxygenated blood. Veins always return blood to the heart, however the pulmonary veins are bringing oxygenated blood ago to the love so that it might be pumped to the body"s tissues. Deoxygenated blood travels v the best ventricle to the pulmonary arteries. In the lung it is reoxygenated, then went back to the love in the pulmonary veins.


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Example question #3 : knowledge Circulatory vessels


What blood vessel type contains the greatest pressure?


Possible Answers:

Arteriole


Vein


Artery


Capillary


Correct answer:

Artery


Explanation:

Blood is may be to circulation through the blood vessels due to pressure resulted in by the pump of the heart. The press is the best in vessels simply leaving the heart (arteries), and also decreases as the blood ship get further away indigenous the heart. Veins have the shortest pressures out of all the blood vessels. 


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Example concern #4 : knowledge Circulatory vessels


Which that the adhering to is true that arteries?


Possible Answers:

The wall surfaces of arteries and veins are about the same thickness in a given tissue


Their special walls space due entirely to the mass of elastic yarn in the center layer


Arteries lack an endothelial layer


Vein walls are thicker 보다 arteries since veins need to pump blood up from the lower body


Their walls space thick and also muscular compared with veins


Correct answer:

Their walls space thick and also muscular contrasted with veins


Explanation:

Arterial walls have actually three distinctive layers: an within smooth endothelium, a hefty coat the smooth muscle cells and also elastic fibers, and also a looser outer layer the connective tissue. Arteries space uniformly recognizable together robust, thick-walled structures compared with surrounding veins.

Although part veins have actually muscular fibers in their wall surfaces (for example, those in the legs), this great of cell is thin and also often incomplete. Instead of muscle to counteract gravity, veins generally use valves to avoid blood from flowing backward. Arteries, veins, capillaries, and also the love chambers all have actually an endothelial layer.


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Example concern #5 : expertise Circulatory vessels


What vascular structure which tote oxygenated blood indigenous the proximal pulmonary artery straight into the aorta of fetal mammals?


Possible Answers:

The umbilical vein


The umbilical arteries


The ligamentum arteriosum


The foramen ovale


The ductus arteriosus


Correct answer:

The ductus arteriosus


Explanation:

In fetal mammals, oxygenated blood return to the fetus via the umbilical veins. It then drains right into the appropriate side the the heart. There would certainly be no use in sending oxygenated blood into non-aerated lungs, so that is diverted v a channel, the ductus arteriosus, right into the aorta that the fetus.

At birth, this framework closes rapidly, allowing blood to happen the lung of the newborn. A residual tape of connective tissue, the ligamentum arteriosum, clues the website of the initial structure. The foramen ovale is a developmental aperture between the atria, and it commonly closes spontaneously together the love develops.


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Example concern #6 : understanding Circulatory ship


Which of the following statements is true around arteries and veins? 


Possible Answers:

Arteries carry blood away from the heart; veins carry blood toward the heart


Neither arteries no one veins carry blood towards the heart


Arteries lug blood toward the heart; veins bring blood away from the heart


Both arteries and veins carry blood toward the heart


Arteries and veins both carry blood toward the heart and also away from the heart, depending on their location


Correct answer:

Arteries bring blood far from the heart; veins carry blood towards the heart


Explanation:

The circulatory system of the body is composed of blood vessels. There room three main species of blood vessels: the arteries, the capillaries, and the veins.

Arteries constantly carry blood far from the heart. Generally the blood is oxygenated; the exceptions are the pulmonary arteries, which carry blood away from the love to the lung to end up being oxygenated. Veins carry deoxygenated blood in the direction of to heart from tissue, through the exception of the pulmonary veins, which lug oxygenated blood native the lung to the heart. Capillaries enable for exchange between blood and tissue.


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Example question #7 : understanding Circulatory vessels


Is the blood found in the jugular vein oxygen-rich or oxygen-poor, and also why?


Possible Answers:

Oxygen-rich, because it dead blood native the heart come the head and also neck.


Oxygen-poor, due to the fact that it dead blood native the heart to the head and neck


Oxygen-rich, due to the fact that it carries blood native the head and also neck to the heart


Oxygen-poor, due to the fact that it dead blood indigenous the head and neck to the heart


Correct answer:

Oxygen-poor, since it dead blood from the head and also neck to the heart


Explanation:

Begin by remembering that arteries carry blood far from the heart. Veins bring blood native the body back come the heart. Keep in mind that the distinction between the blood in arteries and veins does no lie in the oxygen-content. Rather, the lies in the direction the flow. Arteries always take blood far from the heart, vice versa, veins always take blood back to the heart.


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Example question #8 : expertise Circulatory vessels


Which of the adhering to is true of veins and also arteries?


Possible Answers:

Veins bring oxygen-rich blood back to the love via the pulmonary circuit


Arteries carry oxygen-rich blood ago to the love via the pulmonary circuit


Arteries carry oxygen-poor blood earlier to the love via the pulmonary circuit


Veins carry oxygen-poor blood ago to the heart via the pulmonary circuit


Correct answer:

Veins carry oxygen-rich blood back to the heart via the pulmonary circuit


Explanation:

Arteries bring blood away from the heart. In all yet one case, arteries carry oxygen-rich blood. The exception is the pulmonary arteries. They bring oxygen-poor blood away from the heart, to the lungs, to choose up an ext oxygen. Veins lug blood earlier to the heart. In all but one case, veins lug oxygen-poor blood. The exception is the pulmonary veins. They bring oxygen-rich blood from the lungs back to the heart.


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Example question #9 : expertise Circulatory vessels


Which the the following components of the circulatory device contain valves?


Possible Answers:

Capillaries


Veins


Arteries


All the these


Arterioles


Correct answer:

Veins


Explanation:

Veins room the just circulatory vessels that contain valves. These structures contain valves due to the fact that much the the pumping pressure that originated in the heart has actually been reduced by the moment blood reaches veins, which return deoxygenated blood come the heart. The palliation of pressure can cause the blood to swimming pool or move an extremely slowly. Because veins rely mainly on gravity, blood circulation force (originating indigenous the heart), and muscular contractions to squeeze blood with them, it provides sense for them to have valves to keep blood from flow backwards in in between muscular contractions.


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Example question #10 : expertise Circulatory ship


Which of the adhering to carries oxygen-poor blood?


Possible Answers:

Aorta


Pulmonary arteries


Femoral artery


Pulmonary veins


Carotid artery


Correct answer:

Pulmonary arteries


Explanation:

The pulmonary arteries are the only arteries the contain oxygen-poor blood since it tote blood right into the lung to it is in oxygenated. By definition, arteries carry blood away from the heart and also veins bring blood come the heart. However, the pulmonary vein is the only vein in the body the carries oxygen-rich blood (from the lungs back to the heart to be pumped into the rest of the body) and the pulmonary artery is the just artery in the body the carries oxygen-poor blood (to the lungs to it is in oxygenated prior to being sent to the heart to it is in pumped into the rest of the body. The carotid artery is in the neck and also delivers oxygen-rich blood to head. The femoral artery is in the leg and delivers oxygen-rich blood to the leg. The aorta is the key artery that delivers blood native the left ventricle the the love to the rest of the body. 


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