High institution Biology assist » Tissues, Organs, and Organ systems » Organs and Organ equipment » Circulatory device » knowledge Circulatory vessels
Explanation:

Arteries room responsible for moving blood to organs, traveling away from the heart, while veins are responsible for transporting blood ago toward the heart. Arteries generally lug oxygenated blood to provide oxygen to organs, and veins generally carry deoxygenated blood back to the heart because that re-oxygenation. The singular exceptions are the pulmonary arteries and also pulmonary veins. The pulmonary arteries still take trip away indigenous the heart, however carry deoxygenated blood indigenous the best atrium come the lungs. The pulmonary veins still travel towards the heart, but carry oxygenated blood from the lung to the left atrium.

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Example concern #1 : understanding Circulatory ship


Which the the following statements about the circulatory mechanism is false?


Possible Answers:

Veins constantly bring deoxygenated blood back to the heart


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


The right ventricle pumps blood to the lungs


The worse vena cava empties blood right into the right atrium


Correct answer:

Veins always bring deoxygenated blood ago to the heart


Explanation:

A usual misconception is that veins always carry deoxygenated blood. Veins always return blood to the heart, however the pulmonary veins room bringing oxygenated blood earlier to the heart so that it might be pumped to the body"s tissues. Deoxygenated blood travels v the right ventricle come the pulmonary arteries. In the lung it is reoxygenated, then returned to the love in the pulmonary veins.


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Example inquiry #3 : understanding Circulatory ship


What blood vessel type contains the greatest pressure?


Possible Answers:

Vein


Capillary


Arteriole


Artery


Correct answer:

Artery


Explanation:

Blood is maybe to circulation through the blood vessels because of pressure brought about by the pump of the heart. The press is the greatest in vessels just leaving the love (arteries), and also decreases as the blood ship get more away native the heart. Veins have actually the lowest pressures out of every the blood vessels. 


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Example inquiry #1 : expertise Circulatory vessels


Which that the complying with is true of arteries?


Possible Answers:

Vein walls are thicker than arteries since veins should pump blood up from the reduced body


Arteries lack an endothelial layer


Their thick walls room due totally to the mass of elastic fibers in the middle layer


Their walls room thick and muscular contrasted with veins


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


Correct answer:

Their walls room thick and also muscular compared with veins


Explanation:

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

Although part veins have actually muscular fibers in their walls (for example, those in the legs), this class of cell is thin and often incomplete. Instead of muscle to against gravity, veins normally use valves to stop blood from flow backward. Arteries, veins, capillaries, and also the love chambers all have an endothelial layer.


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Example question #5 : understanding Circulatory vessels


What vascular framework which tote oxygenated blood from the proximal pulmonary artery straight into the aorta the fetal mammals?


Possible Answers:

The foramen ovale


The ductus arteriosus


The umbilical arteries


The umbilical vein


The ligamentum arteriosum


Correct answer:

The ductus arteriosus


Explanation:

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

At birth, this framework closes rapidly, allowing blood to happen the lungs of the newborn. A residual band of connective tissue, the ligamentum arteriosum, clues the website of the original structure. The foramen ovale is a developmental aperture between the atria, and also it typically closes spontaneously as the heart develops.


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Example inquiry #6 : knowledge Circulatory ship


Which of the adhering to statements is true about arteries and veins? 


Possible Answers:

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


Neither arteries no one veins lug blood towards the heart


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


Explanation:

The circulatory mechanism of the body is written of blood vessels. There room three main types of blood vessels: the arteries, the capillaries, and also the veins.

Arteries always carry blood away from the heart. Normally the blood is oxygenated; the exceptions room the pulmonary arteries, which carry blood away from the love to the lung to become oxygenated. Veins lug deoxygenated blood in the direction of to heart from tissue, v the exception of the pulmonary veins, which carry oxygenated blood from the lung to the heart. Capillaries enable for exchange between blood and also tissue.


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Example concern #13 : Circulatory device


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


Possible Answers:

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


Oxygen-poor, because it carries blood native the head and also neck to the heart


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


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


Correct answer:

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


Explanation:

Begin through remembering that arteries carry blood away from the heart. Veins lug blood from the body back to the heart. Keep in mind that the difference between the blood in arteries and also veins does not lie in the oxygen-content. Rather, that lies in the direction the flow. Arteries constantly take blood far from the heart, conversely, veins always take blood back to the heart.


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Example question #1 : knowledge Circulatory ship


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


Possible Answers:

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


Veins carry oxygen-poor blood back to the love via the pulmonary circuit


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


Veins carry oxygen-rich blood earlier to the love via the pulmonary circuit


Correct answer:

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


Explanation:

Arteries lug blood far from the heart. In all but one case, arteries lug oxygen-rich blood. The exception is the pulmonary arteries. They lug oxygen-poor blood away from the heart, come the lungs, to pick up much more oxygen. Veins carry blood ago to the heart. In all yet one case, veins bring oxygen-poor blood. The exemption is the pulmonary veins. They bring oxygen-rich blood native the lungs ago to the heart.


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Example concern #1 : expertise Circulatory ship


Which the the following contents of the circulatory mechanism contain valves?


Possible Answers:

Capillaries


Arteries


All of these


Arterioles


Veins


Correct answer:

Veins


Explanation:

Veins space the just circulatory vessels that contain valves. These frameworks contain valves due to the fact that much that the pumping press that originated in the heart has actually been decreased by the time blood get veins, i m sorry return deoxygenated blood to the heart. The reduction of pressure can cause the blood to pool or move an extremely slowly. Since veins rely largely on gravity, blood circulation force (originating from the heart), and muscular contractions to squeeze blood through them, it renders sense for them to have valves to keep blood from flow backwards in between muscular contractions.

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Example question #10 : knowledge Circulatory ship


Which of the complying with carries oxygen-poor blood?


Possible Answers:

Pulmonary arteries


Femoral artery


Aorta


Carotid artery


Pulmonary veins


Correct answer:

Pulmonary arteries


Explanation:

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


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