High school Biology aid » Tissues, Organs, and also Organ systems » Organs and also Organ solution » Circulatory mechanism » understanding Circulatory vessels
Explanation:

Arteries space responsible for transporting blood to organs, traveling far from the heart, when veins space responsible for transporting blood ago toward the heart. Arteries generally lug oxygenated blood to deliver oxygen come organs, and veins generally lug deoxygenated blood ago to the heart for re-oxygenation. The singular exceptions space the pulmonary arteries and pulmonary veins. The pulmonary arteries still take trip away from the heart, but carry deoxygenated blood from the appropriate atrium come the lungs. The pulmonary veins still travel towards the heart, yet carry oxygenated blood from the lungs to the left atrium.

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Example question #1 : understanding Circulatory ship


Which that the following statements around the circulatory device is false?


Possible Answers:

The appropriate ventricle pumps blood to the lungs


The inferior vena cava empties blood right into the best atrium


Veins always bring deoxygenated blood ago to the heart


Blood will constantly travel from arteries to capillaries, and also then right into veins


Correct answer:

Veins always bring deoxygenated blood earlier to the heart


Explanation:

A typical misconception is that veins always carry deoxygenated blood. Veins constantly return blood to the heart, but the pulmonary veins room bringing oxygenated blood earlier to the heart so the it might be pumped come the body"s tissues. Deoxygenated blood travels with the ideal ventricle to the pulmonary arteries. In the lungs it is reoxygenated, then returned to the heart in the pulmonary veins.


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Example inquiry #16 : Circulatory device


What blood vessel kind contains the greatest pressure?


Possible Answers:

Capillary


Vein


Arteriole


Artery


Correct answer:

Artery


Explanation:

Blood is maybe to flow through the blood vessels because of pressure led to by the pump of the heart. The pressure is the greatest in vessels simply leaving the love (arteries), and also decreases as the blood ship get further away indigenous the heart. Veins have the shortest pressures the end of all the blood vessels. 


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Example inquiry #1 : expertise Circulatory ship


Which that the complying with is true of arteries?


Possible Answers:

Their thick walls space due entirely to the mass of elastic fibers in the middle layer


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


Arteries lack an endothelial layer


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


Their walls space thick and also muscular contrasted with veins


Correct answer:

Their walls room thick and also muscular compared with veins


Explanation:

Arterial walls have actually three unique layers: an inside smooth endothelium, a heavy coat the smooth muscle cells and also elastic fibers, and a looser external layer the connective tissue. Arteries space uniformly recognizable as robust, thick-walled structures compared with surrounding veins.

Although some veins have actually muscular yarn in their walls (for example, those in the legs), this layer of cells is thin and often incomplete. Rather 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 actually an endothelial layer.


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Example inquiry #1 : expertise Circulatory ship


What vascular framework which carries oxygenated blood native the proximal pulmonary artery straight into the aorta the 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 returns to the fetus via the umbilical veins. It climate drains right into the ideal side the the heart. There would be no use in sending out oxygenated blood into non-aerated lungs, so the is diverted through a channel, the ductus arteriosus, into the aorta of the fetus.

At birth, this structure closes rapidly, permitting blood to happen the lung of the newborn. A residual band of connective tissue, the ligamentum arteriosum, marks the website of the initial structure. The foramen ovale is a developmental aperture in between the atria, and also it commonly closes spontaneously as the love develops.


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Example concern #19 : Circulatory mechanism


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


Possible Answers:

Both arteries and veins bring blood towards the heart


Neither arteries no one veins bring blood toward the heart


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


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


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


Correct answer:

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


Explanation:

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

Arteries constantly carry blood away from the heart. Generally the blood is oxygenated; the exceptions space the pulmonary arteries, which carry blood away from the love to the lungs to end up being oxygenated. Veins carry deoxygenated blood in the direction of to love from tissue, v the exemption of the pulmonary veins, which bring oxygenated blood from the lungs to the heart. Capillaries allow for exchange in between blood and also tissue.


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Example inquiry #20 : Circulatory device


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


Possible Answers:

Oxygen-poor, because it carries blood indigenous the heart come the head and neck


Oxygen-rich, due to the fact that it tote blood indigenous the heart to the head and neck.


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


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


Correct answer:

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


Explanation:

Begin by remembering that arteries bring blood far from the heart. Veins lug blood indigenous the body back come the heart. Note that the distinction between the blood in arteries and veins does not lie in the oxygen-content. Rather, that lies in the direction of flow. Arteries constantly take blood away from the heart, whereas veins constantly take blood earlier to the heart.


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Example question #1 : knowledge Circulatory vessels


Which that the following is true of veins and arteries?


Possible Answers:

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


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


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


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


Correct answer:

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


Explanation:

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


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Example concern #2 : understanding Circulatory ship


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


Possible Answers:

Arterioles


Arteries


Veins


All of these


Capillaries


Correct answer:

Veins


Explanation:

Veins are the only circulatory vessels the contain valves. These frameworks contain valves since much of the pumping push that source in the heart has been diminished by the moment blood will veins, i m sorry return deoxygenated blood to the heart. The reduction of force can cause the blood to pool or move very slowly. Due to the fact that veins rely greatly on gravity, blood circulation force (originating indigenous the heart), and also muscular contractions to squeeze blood through them, it provides sense for them to have actually valves to store blood from flowing backwards in between muscular contractions.


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Example question #1 : knowledge Circulatory ship


Which of the adhering to carries oxygen-poor blood?


Possible Answers:

Pulmonary arteries


Aorta


Carotid artery


Pulmonary veins


Femoral artery


Correct answer:

Pulmonary arteries


Explanation:

The pulmonary arteries room the just arteries the contain oxygen-poor blood since it carries blood into the lung to be oxygenated. By definition, arteries bring blood far from the heart and also veins bring blood to the heart. However, the pulmonary vein is the only vein in the body that carries oxygen-rich blood (from the lungs back to the love to be pumped right into the remainder of the body) and the pulmonary artery is the only artery in the body the carries oxygen-poor blood (to the lungs to it is in oxygenated prior to 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 come 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 from the left ventricle that the heart to the rest of the body. 


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