High School Biology Assistance » Tworries, Organs, and also Organ Solution » Organs and Organ Systems » Circulatory System » Understanding Circulatory Vessels
Explanation:

Arteries are responsible for delivering blood to organs, traveling amethod from the heart, while veins are responsible for delivering blood ago towards the heart. Arteries primarily bring oxygenated blood to supply oxygen to organs, and also veins generally bring deoxygenated blood earlier to the heart for re-oxygecountry. The singular exceptions are the pulmonary arteries and pulmonary veins. The pulmonary arteries still travel ameans from the heart, however lug deoxygenated blood from the best atrium to the lungs. The pulmonary veins still take a trip towards the heart, however lug oxygenated blood from the lungs to the left atrium.

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Example Inquiry #1 : Understanding Circulatory Vessels


Which of the complying with statements about the circulatory mechanism is false?


Possible Answers:

Veins always lug deoxygenated blood ago to the heart


Blood will certainly always take a trip from arteries to capillaries, and then right into veins


The right ventricle pumps blood to the lungs


The inferior vena cava empties blood into the ideal atrium


Correct answer:

Veins always carry deoxygenated blood ago to the heart


Explanation:

A common misconception is that veins constantly lug deoxygenated blood. Veins always rerotate blood to the heart, yet the pulmonary veins are bringing oxygenated blood earlier to the heart so that it might be pumped to the body"s tproblems. Deoxygenated blood travels with the appropriate 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 Question #3 : Understanding Circulatory Vessels


What blood vessel kind contains the highest possible pressure?


Possible Answers:

Vein


Capillary


Arteriole


Artery


Correct answer:

Artery


Explanation:

Blood is able to circulation via the blood vessels because of press brought about by the pumping of the heart. The press is the best in vessels simply leaving the heart (arteries), and decreases as the blood vessels get even more ameans from the heart. Veins have the lowest pressures out of all the blood vessels. 


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Example Inquiry #1 : Understanding Circulatory Vessels


Which of the adhering to is true of arteries?


Possible Answers:

Vein walls are thicker than arteries because veins have to pump blood up from the lower body


Arteries lack an endothelial layer


Their thick wall surfaces are due entirely to the mass of elastic fibers in the middle layer


Their walls are thick and also muscular compared with veins


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


Correct answer:

Their wall surfaces are thick and muscular compared through veins


Explanation:

Arterial walls have actually three distinct layers: an inner smooth endothelium, a heavy coat of smooth muscle cells and also elastic fibers, and a looser external layer of connective tproblem. Arteries are uniformly recognizable as robust, thick-walled frameworks compared with nearby veins.

Although some veins have actually muscular fibers in their wall surfaces (for example, those in the legs), this layer of cells is thin and also often incomplete. Instead of muscle to counteract gravity, veins typically usage valves to proccasion blood from flowing backward. Arteries, veins, capillaries, and also the heart chambers all have an endothelial layer.


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Example Inquiry #5 : Understanding Circulatory Vessels


What vascular framework which carries oxygenated blood from the proximal pulmonary artery directly into the aorta of 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 returns to the fetus using the umbilical veins. It then drains right into the best side of the heart. Tbelow would certainly be no use in sending oxygenated blood into non-aerated lungs, so it is diverted through a channel, the ductus arteriosus, into the aorta of the fetus.

At birth, this framework closes swiftly, permitting blood to pass the lungs of the newborn. A residual band of connective tissue, the ligamentum arteriosum, marks the website of the original structure. The foraguys ovale is a developpsychological aperture between the atria, and also it generally closes spontaneously as the heart develops.


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Example Question #6 : Understanding Circulatory Vessels


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


Possible Answers:

Arteries bring blood ameans from the heart; veins bring blood toward the heart


Neither arteries nor veins bring blood toward the heart


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


Both arteries and veins carry blood toward the heart


Arteries and also veins both bring blood towards the heart and also away from the heart, depending upon their location


Correct answer:

Arteries carry blood amethod from the heart; veins lug blood towards the heart


Explanation:

The circulatory system of the body is composed of blood vessels. Tright here are 3 primary types of blood vessels: the arteries, the capillaries, and the veins.

Arteries constantly carry blood away from the heart. Generally the blood is oxygenated; the exceptions are the pulmonary arteries, which carry blood away from the heart to the lungs to end up being oxygenated. Veins lug deoxygenated blood towards to heart from tissue, through the exemption of the pulmonary veins, which bring oxygenated blood from the lungs to the heart. Capillaries enable for exchange in between blood and also tissue.


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Example Question #13 : Circulatory System


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


Possible Answers:

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


Oxygen-negative, bereason it carries blood from the head and also neck to the heart


Oxygen-wealthy, bereason it carries blood from the heart to the head and neck.


Oxygen-well-off, bereason it carries blood from the head and neck to the heart


Correct answer:

Oxygen-negative, bereason it carries blood from the head and also neck to the heart


Explanation:

Begin by remembering that arteries lug blood ameans from the heart. Veins lug blood from the body ago to the heart. Keep in mind that the difference between the blood in arteries and veins does not lie in the oxygen-content. Rather, it lies in the direction of circulation. Arteries always take blood away from the heart, whereas veins constantly take blood ago to the heart.


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Example Question #1 : Understanding Circulatory Vessels


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


Possible Answers:

Arteries lug oxygen-negative blood ago to the heart via the pulmonary circuit


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


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


Veins bring oxygen-well-off blood ago to the heart using the pulmonary circuit


Correct answer:

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


Explanation:

Arteries carry blood ameans from the heart. In all but one case, arteries carry oxygen-affluent blood. The exemption is the pulmonary arteries. They lug oxygen-bad blood away from the heart, to the lungs, to pick up more oxygen. Veins carry blood back to the heart. In all however one situation, veins carry oxygen-poor blood. The exception is the pulmonary veins. They lug oxygen-well-off blood from the lungs ago to the heart.


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Example Question #1 : Understanding Circulatory Vessels


Which of the complying with components of the circulatory device contain valves?


Possible Answers:

Capillaries


Arteries


All of these


Arterioles


Veins


Correct answer:

Veins


Explanation:

Veins are the just circulatory vessels that contain valves. These structures contain valves because a lot of the pumping press that originated in the heart has actually been diminished by the time blood reaches veins, which rerevolve deoxygenated blood to the heart. The reduction of pressure can cause the blood to pool or relocate exceptionally gradually. Because veins rely mainly on gravity, blood flow pressure (originating from the heart), and muscular contractions to squeeze blood with them, it provides sense for them to have actually valves to keep blood from flowing backwards in in between muscular contractions.

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Example Concern #10 : Understanding Circulatory Vessels


Which of the following carries oxygen-poor blood?


Possible Answers:

Pulmonary arteries


Feethical artery


Aorta


Carotid artery


Pulmonary veins


Correct answer:

Pulmonary arteries


Explanation:

The pulmonary arteries are the only arteries that contain oxygen-poor blood because it carries blood right into the lungs to be oxygenated. By definition, arteries lug blood amethod 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 be pumped right into the rest of the body) and the pulmonary artery is the only artery in the body that carries oxygen-poor blood (to the lungs to be oxygenated prior to being sent out to the heart to be pumped into the remainder of the body. The carotid artery is in the neck and also delivers oxygen-affluent blood to head. The feethical artery is in the leg and also delivers oxygen-affluent blood to the leg. The aorta is the major artery that delivers blood from the left ventricle of the heart to the remainder of the body. 


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