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

Arteries space responsible for transferring blood to organs, traveling far from the heart, while veins are responsible for transferring blood earlier toward the heart. Arteries generally lug oxygenated blood to deliver oxygen to organs, and also 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 from the heart, however carry deoxygenated blood from the appropriate atrium to the lungs. The pulmonary veins tho travel toward the heart, but carry oxygenated blood from the lungs to the left atrium.

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Example concern #1 : knowledge Circulatory ship


Which that the complying with statements around the circulatory mechanism is false?


Possible Answers:

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


The best ventricle pumps blood to the lungs


The inferior vena cava empties blood right into the right atrium


Veins always bring deoxygenated blood earlier to the heart


Correct answer:

Veins always bring deoxygenated blood earlier to the heart


Explanation:

A typical misconception is the veins constantly carry deoxygenated blood. Veins constantly return blood come the heart, yet the pulmonary veins space bringing oxygenated blood back to the heart so that it might be pumped to the body"s tissues. Deoxygenated blood travels through the right ventricle come the pulmonary arteries. In the lung it is reoxygenated, then went back to the heart in the pulmonary veins.


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Example inquiry #16 : Circulatory system


What blood vessel form contains the highest possible pressure?


Possible Answers:

Capillary


Vein


Arteriole


Artery


Correct answer:

Artery


Explanation:

Blood is may be to flow through the blood vessels because of pressure resulted in by the pump of the heart. The push is the biggest in vessels simply leaving the love (arteries), and also decreases as the blood vessels get additional away from the heart. Veins have actually the lowest pressures out of all the blood vessels. 


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Example concern #1 : understanding Circulatory vessels


Which that the complying with is true of arteries?


Possible Answers:

Arteries lack an endothelial layer


Vein walls space thicker than arteries since veins need to pump blood up from the reduced body


Their walls space thick and muscular contrasted with veins


Their special walls space due entirely to the bulk of elastic fibers in the center layer


The walls of arteries and veins are about the same thickness in a offered tissue


Correct answer:

Their walls room thick and muscular compared with veins


Explanation:

Arterial walls have actually three unique layers: an inner smooth endothelium, a hefty coat the smooth muscle cells and elastic fibers, and a looser external layer of connective tissue. Arteries space uniformly recognizable together robust, thick-walled structures compared with nearby veins.

Although some veins have actually muscular yarn in their walls (for example, those in the legs), this great of cell is thin and often incomplete. Instead of muscle to counteract gravity, veins usually use valves to prevent blood from flow backward. Arteries, veins, capillaries, and the heart chambers all have an endothelial layer.


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Example inquiry #1 : understanding Circulatory vessels


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


Possible Answers:

The umbilical vein


The ligamentum arteriosum


The umbilical arteries


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 into the right side of the heart. There would certainly be no use in sending oxygenated blood right into non-aerated lungs, so that is diverted with a channel, the ductus arteriosus, right into the aorta of the fetus.

At birth, this structure closes rapidly, permitting blood to happen the lung of the newborn. A residual tape of connective tissue, the ligamentum arteriosum, point out the site of the original structure. The foramen ovale is a developmental aperture in between the atria, and it usually closes spontaneously as the love develops.


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Example question #19 : Circulatory mechanism


Which of the complying with statements is true around arteries and also veins? 


Possible Answers:

Both arteries and also veins lug blood towards the heart


Neither arteries no one veins bring blood toward the heart


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


Arteries bring blood away from the heart; veins bring blood towards the heart


Arteries and veins both bring blood towards the heart and away native the heart, depending on their location


Correct answer:

Arteries lug blood away from the heart; veins lug blood towards the heart


Explanation:

The circulatory mechanism of the human body is created of blood vessels. There space three main species of blood vessels: the arteries, the capillaries, and also the veins.

Arteries constantly carry blood away from the heart. Typically the blood is oxygenated; the exceptions room the pulmonary arteries, which bring blood away from the heart to the lungs to become oxygenated. Veins bring deoxygenated blood in the direction of to love from tissue, v the exemption of the pulmonary veins, which lug oxygenated blood indigenous the lungs to the heart. Capillaries enable for exchange in between blood and tissue.


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Example inquiry #20 : Circulatory mechanism


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


Possible Answers:

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


Oxygen-rich, because it tote blood indigenous the heart come the head and also neck.


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


Oxygen-rich, because it dead blood from the head and also neck to the heart


Correct answer:

Oxygen-poor, since it tote blood native the head and neck to the heart


Explanation:

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


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Example question #1 : understanding Circulatory vessels


Which of the complying with is true of veins and also arteries?


Possible Answers:

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


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


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


Veins bring oxygen-poor blood earlier to the heart via the pulmonary circuit


Correct answer:

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


Explanation:

Arteries carry blood away from the heart. In all however 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 an ext oxygen. Veins lug blood back to the heart. In all however one case, veins lug oxygen-poor blood. The exception is the pulmonary veins. They bring oxygen-rich blood indigenous the lungs ago to the heart.


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Example inquiry #2 : understanding Circulatory vessels


Which that the following materials of the circulatory device contain valves?


Possible Answers:

Arterioles


Arteries


Veins


All the these


Capillaries


Correct answer:

Veins


Explanation:

Veins are the just circulatory vessels the contain valves. These frameworks contain valves because much of the pumping pressure that originated in the heart has been diminished by the moment blood will veins, i m sorry return deoxygenated blood to the heart. The palliation of force can cause the blood to swimming pool or move an extremely slowly. Since veins rely greatly on gravity, blood circulation force (originating from the heart), and also muscular contractions to squeeze blood with them, it makes sense for them to have valves to store blood from flow backwards in between muscular contractions.

See more: Why Are The Alkali Metals And The Halogens Very Reactive ? Which Is More Reactive Alkali Metals Or Halogens


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Example concern #3 : understanding Circulatory ship


Which that the adhering to carries oxygen-poor blood?


Possible Answers:

Aorta


Pulmonary veins


Carotid artery


Femoral artery


Pulmonary arteries


Correct answer:

Pulmonary arteries


Explanation:

The pulmonary arteries are the just arteries that contain oxygen-poor blood due to the fact that it tote blood into the lung to be oxygenated. Through definition, arteries bring blood away from the heart and also veins carry blood to the heart. However, the pulmonary vein is the only vein in the body that carries oxygen-rich blood (from the lungs earlier to the heart to it is in pumped right into the rest of the body) and also the pulmonary artery is the only artery in the body that carries oxygen-poor blood (to the lung to be oxygenated before being sent out to the love to it is in pumped into the remainder 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 main artery the delivers blood indigenous the left ventricle the the love to the remainder of the body. 


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